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Three-ingredient gunpowder recipe

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In the Chinese culture, there are four great inventions that are celebrated. You may have recognized them at the Beijing Olympics as they made an appearance at the games. They are: papermaking, printing, the compass, and gunpowder.

Although there is a widespread belief that the Chinese only used gunpowder for fireworks, they also used it in battle and for weaponry. While the Chinese did not put together the rifle as we know it, they were using the explosive nature of the gunpowder to create weapons to kill. There were incendiary arrows and exploding spears, but my favorite was the box of fire arrows that was held by a soldier.

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In other words, it wasn’t as benign as the ‘just for fireworks’ claim that often gets thrown around. The mix was created by alchemists looking for an elixir of immortality.

I find it amusing that even back then were trying to cheat death. I feel for the poor guy that tried this elixir and found that it did just the opposite!

What is Gunpowder Made Of?
The basic mix of gunpowder is universal and made of three main ingredients. There are no modifications that need to be made to these base ingredients–it’s merely a matter of finding them and mixing them.

Salt Peter – The best source for this is stump remover and ice packs. I am partial to the stump remover because of its consistency. It is already a fine powder and this makes mixing it much easier than using the thicker more granule pellets.

Charcoal – Whether you decide to use brickets, homemade charcoal, or some activated charcoal from your stock, you will simply need powdered charcoal.

I like to use the activated–again, for consistency and fine powder. This eliminates the step of having to powder it myself.

Sulfur – I get mine on Amazon. Though, my father in law is using a product for his garden that would probably be better. It would allow you to get two uses out of the product.

The Common Methods
Marble Mill – Many people who make gunpowder use what is called a marble mill. It’s very important that you thoroughly mix your ingredients to get the best results.

The marble mill is basically a container filled with marbles that is spun by another source. Most recipes call for a 12-hour mill with all three ingredients inside the mill.

Blender – A blender or a food processor can be used to make some great gunpowder as well. Again, if you can achieve a good incorporation of ingredients.

Another method is to add a little water to the mix and dry the mix again. This helps with the bonding and the mix.

Pulverize – You can also use the old mortar and pestle method. The first time I made gunpowder, I used this method.

It’s a punishing and grueling way to do it, but in a time where we don’t have many options, it’s good to know you can make it happen without electricity.

Common Mistakes
Though this is a straightforward process you will find that there are many ways to screw it all up!

• Not mixing it thoroughly.
• Varying the formula.
• Using ingredients that are not fully processed i.e. lumpy charcoal or unprocessed saltpeter..

Your Homemade Gunpowder Recipe
Ingredients:

75% Saltpeter
15% Charcoal
10% Sulfur
This is the formula no matter the batch size.

Tools:

Gloves
Eye Protection
Breathing Mask
Glass Bowl or Container
Sifter or Colander
Wooden Spoon
Glass Jar (I save pickle Jars and stuff to drink out of)
::::::SAFETY FIRST::::::
Mix this stuff outside and make sure you use adequate protection. Assure your location has great ventilation if you are not mixing it in the outdoors. It is designed to explode and it is made of some pretty nasty stuff, none of which are meant for your lungs.

Before you start, be sure you have on gloves, eye protection, and a breathing mask.

1. Fill your container with 75% saltpeter. I decide this amount by basically equating 75% to ¾ of the total volume of the container I am using. In this case, it’s ¾ of this glass jar:

2. Break down your charcoal and sulfur next. You do not want to do half and half as that is not the formula, so I make sure to add my charcoal layer first and go heavier on the charcoal.

It’s never exact but remember, the charcoal is what is going to catch fire first so having too much isn’t a bad deal. Fill the jar the rest of the way with sulfur. You should have something that looks like this:

3. The rest of this process is about mixing. The more thorough the mix, the better it will perform. I first use a colander and glass container to sift into.

You never want to work with metal on metal when creating black powder. Sparks can be real bad!

4. Sift this mix once and it will not be completely incorporated. You will wind up with a mix that is similar to the picture below. Once you sift the mix again it will make a big difference.

5. You may find that you have some clumped up sulfur in the mix. Just break it up and sift the whole thing again.

6. From here you should have a well-incorporated mix. I usually turn it over onto itself a minute or so to mix it even more. The ingredients you are using are already powdered so they mix easily.

7. To test your mix, simply grab some paper out of your printer, pour a line of gunpowder onto it and light the corner of the paper.

8. If it worked, you will have a serious flame and bubbling release of heat from your mix.

The best part about this stuff is you can store all of the components separately and make it when you need it. Why will you need it? Well, you can make some really cool fireworks.

Or you can mount an insurgency against NATO forces in the event of a martial-law-like takeover of America. Your call.

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Comments
Kerahdah says

MARCH 7, 2018 AT 2:33 AM

Not per say!!!!!!!!!!!!!Damn! it’s per se , Latin for those who know. If you’re not educated, don’t post, please!

REPLY
Lawrence A Dickerson says

MAY 4, 2018 AT 1:10 PM

Let’s see here. Who is more likely the better individual with which to engage in an open discussion of just about anything? Is it the person who feels it necessary to correct the grammar of others or the one who can exchange ideas leading to a fruitful and even entertaining experience? Lighten up dude and enjoy smelling the flowers rather than picking off the dead petals.

REPLY
Mike Ehrmantraut says

JULY 23, 2018 AT 8:32 PM

You’re kind of a dick, aren’t you?

Lighten up, Francis.

REPLY
Tony says

FEBRUARY 24, 2020 AT 9:54 AM

Get a life. The article was not an English lesson, it was about how to make gunpowder. Maybe not everybody is as “educated” as you are, but at least he knows how to make gunpowder, but since you are so “educated’ maybe you can enlighten us with a better way of doing it. If not, then sit down and shut the fuck up.

REPLY
Nate says

JULY 16, 2020 AT 6:07 AM

Yes sit down and close the mouth and open the ears!!!!

REPLY
JOE WIZ says

FEBRUARY 14, 2018 AT 11:55 AM

75…15…& 10… Got it. The 75 part can be mixed with sugar to make rocket fuel….but that’s another site….Love this stuff

REPLY
Doug Zimmerman says

DECEMBER 3, 2017 AT 10:37 AM

Its not my volume its by weight, you will find out it works much better by weight. Volume gives you way too much Nitrate.

REPLY
Alex Ingram says

NOVEMBER 26, 2017 AT 9:46 AM

Note on handleing. Never smoke (anything) while you handle or make black powder. Never drop,,,pound,,,shock or cause a percussive jolt or shock wave to propagate through a container of black powder. Black powder/gunpowder/pyrodex(commercial form ie smokeless propellent of bullets) are all compounds(mixtures) that are anhydrous. (an=no,,,hydrous=hydrate/water or simply “without water.) This means the mixtures are super DRY powdery, dusty like flour. It means they will absorb moisture real quick from the air/atmosphere. In most cases they will get clumpy and then form hard balls if left out in the air. This means keep them powdery by keeping them away from “the air” by keeping it in jars,,,zip lock bags,,,powder horns etc until ready to use. If some clumps up into cakes or balls, then gently break up or mix back into powder but never,,,NEVER pound or bust up the clumps! ALSO- never attempt to “DRY” the clumps back once moisture has effected the powder by “heating the powder”. This means NEVER,,,I repeat NEVER!- WARNING- DANGER (This means you Will Robinson) put black powder or pyrodex into a Microwave oven. (not even for 10 seconds). I know a dude that did this,,,,and I’m still laughing about it 27 years later. Oh lastly. NEVER use “crushed Match-heads” or any other Buba Gump-Urban legand-oh I heard that mix of combustible crap instead of a proper gunpowder mix. Doing so will send you to the ER for burns or worse. (Don’t ask whats worse than burns). Remember,,,”All Accidents are described by the victims starting with these three words. “I DIDN’T THINK” I didn’t think it was loaded. I didn’t think it would do that. I didn’t think there were/was….(etc) Safety FIRST! (Chicks don’t really dig scars!)

REPLY
Keith says

FEBRUARY 26, 2018 AT 6:45 PM

I remember reading a Foxfire article years ago (great books- high school students in Appalachia would go into the hills and ask folk how they did things “in the old days.” They collected a great compendium of skills that are all but forgotten.
Anyway. One guy would make black powder by mixing the ingredients wet. No chance of random ignition and the saltpeter would soak through the carbon particles evenly as a solution. When he had a lump the consistency of biscuit dough, he would push it through a sieve onto a piece of wood and dry it in the sun. He got a consistent grain size for an even burn. He would use it in an old Kentucky Long Rifle.

REPLY
Alan says

FEBRUARY 27, 2018 AT 9:53 AM

Interesting idea, thanks for sharing.

REPLY
Frank says

JULY 23, 2018 AT 8:58 PM

I’ve made it also but mixed it with Rubbing alcohol 90% and then screened it and let it dry drys faster as the alcohol evaporates and it seems to have a little more potency to

REPLY
Dave says

JANUARY 15, 2019 AT 5:06 PM

I read a foxfire article 45 years ago (and have tried this when I was a kid) if you soak the mixture in stale urine you get a much better flash point and the speed of ignition goes up so any explosive properties are enhanced. We used our mixture in a stump splitter and it worked a treat.

REPLY
Steve says

AUGUST 21, 2017 AT 3:49 PM

Personally I wouldn’t worry about that as none of the ingredients are especially toxic. As long as you wash them you should be fine.

REPLY
Steve Ludwick says

AUGUST 4, 2017 AT 6:39 PM

Hi James Walton…Good stuff. Tell Dan the Chinese gave us noodles/spaghetti, and silk.

REPLY
Al Neri says

AUGUST 4, 2017 AT 5:47 PM

All measurements in this are by volume so it is easily adaptable, there are other options available such as in the US army manual (improvised explosives and munitions) however black powder/gun powder is not really much use beyond fireworks and black powder guns imo also flash powder makes much better fireworks. Always try to use the best available resources even if it means making them yourself.

REPLY
Shane Lybbert says

DECEMBER 3, 2017 AT 10:04 AM

Some older calber center fire rifles were shooting black powder first. The old .303 British can be loaded by filling the case to the top with black powder and seating a cast lead bullet. The .30-30, might be another candidate for this, Shot shells and revolver shell can be loaded with black powder. Probably older large caliber big game cartridges .456 win, 375 H&H .405 Jefferies, .45-70, Lyman black powder manual might have recopies for others. I expect crtridges based on the 7mm Mauser could also be reloaded with black powder, which would include .30-06, .308, .270 and others but the would be under powered compare to smokeless loads.
Use Methyl Hydrate as a liquid to mix powder; or urine. One very old recipe calls for the urine of “a wine besotted Bishop”. Urine is a source of salt peter.

REPLY
Ma Kettle says

AUGUST 4, 2017 AT 4:21 PM

Use any old cup or spoon that you can scrape level to mix 15 scoops saltpeter, 3 scoops charcoal and 2 scoops sulfur. It doesn’t matter how big or small the scooper is as long as you measure the powders out equally.

REPLY
Ma Kettle says

AUGUST 4, 2017 AT 4:26 PM

Also, do I have to advise you to avoid using those scoops, etc for any other purpose?! Keep them out of reach of children and fools.

REPLY
book worm says

AUGUST 4, 2017 AT 7:06 PM

now that I can follow TY

REPLY
BOOK WORM says

AUGUST 4, 2017 AT 3:37 PM

MAN I HATE THAT 75% OF THIS 15% OF THAT WHAT THE HECK HAPPENED TO A FORMULA WITH SAY WEIGHT OR CUPS. MIGHT AS WELL READ THE ANARCHIST COOKBOOK

REPLY
James says

AUGUST 21, 2017 AT 2:12 PM

If your that worried about how to do percentages in a mix, you may not be smart enough to make black powder.

REPLY
Lame sour says

SEPTEMBER 3, 2017 AT 12:43 PM

Yea well said simple math

REPLY
Stewie says

OCTOBER 13, 2017 AT 1:57 AM

Per Say would you like to have another look at your mail re gunpowder the last two of the mix you have the same 15% thought you mite like to change it so that Book Worm understands

REPLY
John says

NOVEMBER 23, 2017 AT 8:54 AM

Sounds like your blaming others because you’re not smart enough to do the math. Weigh the vesal your using and weigh each ingredients, oh I forgot you don’t know how to.

REPLY
Rick says

JUNE 10, 2018 AT 3:05 AM

If you’re not smart enough to figure it out. You shouldn’t be thinking about trying it.

REPLY
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9v bat CP charge

How to Charge Your Phone Using a 9-Volt Battery
Good news not only for smartphone users, but also for businesses that sell cell phones — you can use a 9-volt battery to charge your phone.

A 9-volt battery can give your phone just enough life to be used for a single call or a few texts. This feature is particularly useful in cases where you have no viable power source, like when you’re stuck in a storm or any other emergency situation.

How to Charge Your Phone Using a 9-Volt Battery

You have to use a car charger – the one you plug into the cigarette lighter in any car. You can use a metal pen spring to tape the metal nub on the side of the charger, or a key to activate the charger.

Place your 9-volt battery in such a way that the big negative terminal is on the spring, while the smaller positive terminal is on the car charger.

Hold it in place for a few minutes, and voila! Your iPhone or Android is charged.

You want to make sure that everything is well-connected – the spring should be touching the car charger’s nub, with the car charger button pressed in. If any parts aren’t connected the right way, it won’t work. You can use a piece of aluminum foil to keep these parts in place.

How Much Charge is in a 9-Volt Battery?

While a typical 9-volt battery only has 500 milliAmpere hours (mAh), most cell phones now need thousands of mAh to be fully charged.

For instance, an iPhone 7 needs about 1,960 mAh, and a Samsung Galaxy S8 or S9 will be fully charged with as much as 3,000 mAh.

What you can get from a 9-volt battery can be enough to call 911, text your parents, or ask for emergency assistance. But while you gain a little bit of charge from the battery, getting to a full charge this way is not the most practical (and safest) solution if you have available power.

Of course, it helps to have this backup plan, especially when you’re preparing for a disaster like a looming storm. Keep several 9-volt batteries stashed in the house and make sure you have a pen with a spring inside. If you have a big portable battery, that’s an even better option. Just make sure it’s charged before the powers go out.

Is Charging with a 9-Volt Battery Safe?

The big question: Is it safe for your device?

Yes. The car charger can regulate how much current goes into the phone, which means it allows only 5 volts to charge.

But experts advise that this method should only be used for emergency purposes. The method could short the battery and cause an explosion, damaging your phone and risking injury on yourself.

So the next time you find yourself in a pinch with a dead cell phone, remember that you can use this ingenious technique to put a bit of charge into your device. Keep in mind though, that a quick 9-volt battery charge should only be used in very dire situations when you have no other power source.

Give your gadgets a new life
At Gadget Salvation, our mission is to contribute to the electronics reselling market as much as possible so that we extend the life of our gadgets and diminish waste. Our process is simple and seamless.

1

Answer a few questions and get an estimate.

2

Ship your gadget for free.

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Get paid within twobusiness days of our receiving your gadget.

Sell Your Gadget

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December 10, 2018 Product Reviews, Recycle Cesar N

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Blogger at Gadget Salvation since 2014. Technology enthusiast.

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No More Tears lyrics

The light in the window is a crack in the sky
A stairway to darkness in the blink of an eye
A levee of tears to learn she’ll never be coming back
The man in the dark will bring another attack
Your mama told you that you’re not supposed to talk to strangers
Look in the mirror, tell me, do you think your life’s in danger? Yeah

[Chorus]
No more tears (Tears, tears)
No more tears (Tears, tears)
No more tears (Tears, tears)
No more tears (Tears, tears)

[Verse 2]
Another day passes as the night closes in
The red light goes on to say it’s time to begin
I see the man around the corner waiting, can he see me?
I close my eyes and wait to hear the sound of someone screaming here

[Chorus]
No more tears (Tears, tears)
No more tears (Tears, tears)
No more tears (Tears, tears)
No more tears (Tears, tears)

solar Spectrum

The Solar Spectrum And Why “UV Solar Panels” Are A Con Job
HomepageSolar Panels

We are getting reports of people paying through the nose for 5kW of “UV Solar Panels” from fast talking salespeople. Paying more for “UV Panels” is about as sensible as buying rainbow powered panels from a leprechaun.

The sun is a very large, naturally occurring, fusion reactor in the sky.

It constantly releases a vast amount of energy. Even by the standards of sky fusion reactors it’s pretty powerful and outshines at least 90% of the stars out there.

How powerful is it?

Well, if you took:

all the energy humanity produces in from burning coal, oil, and natural gas
and all the energy from the fission of uranium and other elements in nuclear reactors
and all the energy spun out of wind
and then took the total for an entire year, it would come to less than the amount of sunlight energy hitting the earth every seven seconds1.

Sunlight energy arrives in the form of photons, which is a word that means ‘the smallest amount of light possible’. These photons have different wavelengths2 with longer wavelengths having less energy and shorter wavelengths having more.

If a photon doesn’t have enough energy our eyes can’t see it. The same goes if it has too much energy. But if photons are just Goldilocks, then our eyes can see them and we call them visible light.

Photons that don’t have enough energy to be seen are called infrared and those with too much are called ultraviolet.

Sunlight energy that reaches the ground is around 4% ultraviolet, 43% visible light, and 53% infrared. Solar panels mostly convert visible light into electrical energy, and they also can make use of almost half the infrared energy. But solar panels only use a small portion of ultraviolet.

Why UV Panels are a con job
Because ultraviolet is such a small percentage of sunlight energy, if anyone ever tries to sell you a panel they claim uses ultraviolet light, then if ultraviolet is all it uses it is really, truly, crap compared to a normal panel. Or if it somehow functions like a normal panel as well as making uses of ultraviolet, then it wouldn’t be that much of an improvement over an ordinary panel. It would just be maybe 5% more efficient. That’s enough to make a 20% efficient panel 21% efficient.

As solar panels that can make good use of ultraviolet don’t really exist, even that modest improvement is not realistic. While you can get solar cells that make better use of ultraviolet for use in space, those cells aren’t used in panels you can put on your roof.

Sunlight In Space
Because the sun is a giant, uncontrolled, nuclear reactor, you might think that it would create a great deal of dangerous radiation. And you’d bloody well be right. But because the nuclear reactions happen deep within the sun’s core and the sun is what we scientists call very, very, big the deadly radiation can’t get out.

Light itself can have a hard time escaping the sun and it can take 100,000 years for a photon to get from the center of the sun to its surface. From there it only takes 8 minutes and 20 seconds to splat into someone’s solar panel.

Compared to its total energy output the sun only produces a trivial amount of high energy radiation such as x-rays and gamma rays. But if you are a fragile organic being traveling into space, that trivial amount could become rather important, so I recommend taking precautions3.

Sunlight On Earth
By the time sunlight energy reaches the top of earth’s atmosphere its intensity will be around 1,366 watts per square meter4. Passing through the atmosphere will reduce that by 18% down to 1,120 watts. Mind you, that’s 1,120 watts at noon, at the equator, on a clear day.

Because conditions are rarely perfect, Standard Test Condition (STC) for solar panels is set at the nice round number of 1,000 watts per square meter. This means if you have a 270 watt panel it will provide that many watts of electrical power when exposed to sunlight of 1,000 watts per square meter.

And don’t worry — nothing in your solar system will blow up or break if sunlight exceeds that amount. Hardware manufacturers and system designers take it into account. They also take into allow for sunlight intensity going even higher if it shines through a hole in clouds and panels are hit at the same time by direct sunlight and indirect light scattered by surrounding clouds.

Sunlight Spectrum
This diagram from Wikipedia commons (I must remember to give them some money at some point) shows how much sunlight gets through to the earth’s surface. The yellow area shows the amount of sunlight hitting the top of the atmosphere , and the red area is how much reaches the ground.

Image source: Wikipedia commons

At noon, at the equator the atmosphere reduces sunlight energy hitting the ground by 18%. However the graph above isn’t a snap shot taken under ideal conditions at noon on the equator, but is instead representative of sunlight hitting the earth as a whole. This is why it shows the atmosphere taking a lot more than an 18% bite out of sunlight. In the morning and afternoon sunlight passes through more atmosphere before it hits the ground and higher latitudes have a similar effect.

As you can see in the UV column, the atmosphere stops more than half the ultraviolet light, mostly thanks to the ozone layer, which is what the O3 at the bottom left corner stands for. Moving to the right, more than one quarter of visible light is lost and then the atmosphere takes some big bites out of infrared. The big pieces missing from the red are the result of gases in the atmosphere absorbing specific bands of sunlight energy before it hits the ground5.

The Visible Light Spectrum
Examining only the visible light section of the sunlight spectrum shows it is made of a beautiful rainbow of colors, as this image that fell off the back of a truck on its way to the US National Oceanic And Atmospheric Administration displays:

As you can see, the spectrum as six colors.

Wait a minute, let me change that…

As far as I can see, the spectrum has six colors.

As far as Issac Newton could see the spectrum had seven colors.

The people who made this image decided to tack deep red on at the end, making for eight colors.

And for all I care, you can divide it into as many different shades and call them colors as you like.

The mnemonic I use to remember Zaccy Newt’s seven colors is Roy G. Biv. This stands for Red, Orange, Yellow, Green, Blue, Indigo, Violet.

Visible light starts at a wavelength of around 390 nanometers and ends with red (or deep red) at around 700 nanometers. A nanometer is one billionth of a meter.

Spectrum Of Sunlight Used By Silicon PV
Now here is a spectrum I stole from the University of NSW. It shows sunlight reaching the ground as the one I used earlier does, but this one uses a horrible greenish-grey color to show what portion of sunlight energy a silicon solar panel could convert into electrical energy:

There is a problem with this graph because it shows 49% of the energy being converted to electricity and this is much too high. The highest efficiency of any solar panel that can be bought today is around 23% which is less than half the amount shown. So I drew on the original diagram with my purple pen to show how much light gets converted by such a solar panel. Note that whilst the area is about the correct size – the shape of the enclosing line is a guess.

A doctored version of the first diagram to show how much light is used by a commercially available panel.

As you can see, silicon solar panels can manage to use some of the ultraviolet portion of sunlight on the far left. The amount increases as it becomes visible light and panels go on to produce most of their electricity from visible light.

Unlike with ultraviolet, in the infrared there is a very sharp cutoff in the sunlight energy used by the panel at 1,100 nanometers. This is because wavelengths longer than this simply ignore the silicon atoms and pass by them with little or no effect. The silicon is transparent to infrared of this wavelength or longer.

Multi-junction Solar Cells
A multi-junction solar cell is basically several solar cells crammed into one, with each part specializing in a portion of the spectrum of sunlight energy. The diagram below, that I stole from the Fraunhofer Institute for Solar Energy Systems, shows an example:

Multi-junction cells can have efficiencies of over 35% in normal sunshine and over 46% in concentrated sunshine. But because of their great expense they are not used in panels for rooftops or solar farms and are instead used on space probes and satellites and in specialized concentrated solar applications.

Ultraviolet Panels Don’t Really Exist
Today silicon solar panels make up over 97% of world panel production. The rest is almost entirely cadmium telluride thin film panels produced by companies such as First Solar. These panels can use slightly more infrared than silicon ones, but they should also use slightly less ultraviolet.

Currently people are working to increase the amount of ultraviolet solar panels use. Despite this, all currently available panels are visible light panels first, infrared panels second, and ultraviolet panels only as a distant third. So little ultraviolet hits the earth’s surface that nothing is likely to ever change this. So if a salesperson tells you they have an ultraviolet panel, they are either not being truthful or they don’t know what they are talking about.

What Matters Is A Panel’s Watts And Efficiency
Because ultraviolet only makes up a small portion of the energy in sunlight, the amount of ultraviolet light a panel uses is not going to make much difference to its performance. All else equal, the more ultraviolet energy it uses the better, but there is no need for anyone who is looking to put panels on their roof to worry about it. An all else equal panel that uses more ultraviolet will have a slightly higher wattage and a slightly higher efficiency and those are figures you can easily use to compare it with other panels. Just how much ultraviolet light it uses shouldn’t be a concern.

Footnotes
This means that, with 17% efficient panels, we could supply all the world’s energy needs with an area that is only 41 seconds in size. ↩
If you are wondering whether light is a particle or a wave, the answer is yes. ↩
Such as removing all radiation shielding so gamma rays will hulk you up. ↩
We know this from satellites such as ACRIMSAT, which is a satellite that was banished to space because of its crimes. ↩
CO2 may not appear to be doing much absorbing of energy here. But while it has little effect on sunlight coming in, its major effect is on longer wave infrared emitted from the ground. ↩
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View Comments (15)
SHS says:August 17, 2017 at 6:04 pm
Hi Finn
Still on the same topic,
my question is: is it worthwhile to use N type solar cell rather than P type
as it is more reliable and efficient bot more price $/watts
As I know only 2 top brands ( I f I am NOt wrong ) uses N type

Thank you

Regards Mel

Ronald Brakels says:August 17, 2017 at 6:30 pm
Hello Mel

If you have room to spare on your roof then it can definitely be cheaper to use P-type solar panels. But if your goal is to get as much solar electricity as possible out of a limited amount of space, then premium N-type panels will be best because of their high efficiency.

Of course, some people just like having the best panels available, along with their usually excellent replacement warranties.

As panels with panel string optimization are now available for a relatively low premium, it is now easier to place panels on "difficult" roofs that previously might only have had a limited amount of space where it was practical to place panels, so using them instead high efficiency, but more expensive, panels is an option.

Danny Oneill says:August 17, 2017 at 10:04 pm
Ronald I need some advice please. I have 8 BBPV-175 MONOCRYSTALLINE panels on my roof with a 1.5kw SR2000TL inverter. I have just recently had a ACUMEN smart meter installed by Origin Energy. The panels and inverter are now around 7yrs old. I am thinking of expanding the system by installing a couple more panels. In plain simple English please, what would be your advice ?

Ronald Brakels says:August 17, 2017 at 11:20 pm
Hello Danny

There are a few things you can do. Which is best will depend upon your goals and how much you can spend.

(1) You could add solar panels to your existing inverter. But it will be difficult to find 175 watt panels to match your old ones. You can add larger panels, but their performance will be dragged down to that of the weakest existing panel, so a portion of their capacity will simply go to waste. Your maximum panel capacity, whether it is used or not, can be one-third more than your inverter capacity.

(2) You could have a new solar system installed and keep your old one.

(3) You could get a new solar system and have your old one removed.

Without knowing more I can’t say which would be best for you. But, with increased electricity prices and feed-in tariffs, I am tempted to recommend the third option, provided the initial cost would cause you no hardship.

Danny Oneill says:August 18, 2017 at 12:12 am
Thankyou very much for your quick response, I will weigh up what you have advised, get some quotes and go from there,. Thanks again.

NOYGDB says:March 21, 2018 at 7:28 am
We’re getting closer to the point where solar panels can utilize UV… recently researchers found they could create ‘photonic matter’ by firing UV through a cloud of ultra-cold rubidium atoms… what came out the other side was 100,000 times slower than the speed of light and had invariant mass, so it wasn’t light (or it’d be traveling at the speed of light and would have no invariant mass), it was matter. This is perhaps the first demonstration of light-to-matter conversion. We’ve seen plenty of matter-to-light conversion, but not a lot of the reverse.

This ‘photonic matter’ was comprised of three photons… they’d found a way of setting up a stable three-photon standing wave in the Higgs field in accordance with E^2 = p^2 c^2 + m^2 c^4, to put it in quantum field theory parlance.

All matter is comprised of standing waves, still traveling at c, but ‘pinging’ back and forth against the Higgs field at ~100 trillion trillion times per second. Thus, it’s stationary and thus invariant from our frame of reference. That’s the primary difference between energy and matter, after all.

So eventually we’ll get to the point where photons are combined as described above, and their combined energy will be high enough to bridge the band gap… meaning solar panels that can operate from the heat thrown off by objects. Solar panels that can even work at night.

The research detailed above also represents maybe the second or third step in the long process of creating a Star Trek-type replicator, making any invariant matter directly from energy.

We’re not there yet, but we’re well on our way.

Brooke says:July 24, 2018 at 2:52 am
Hi Ronald,

I’m an educator and I’ve been brainstorming activities to teach kids about invisible wavelengths of light. I bought a small solar panel and wired it to an aux cord. When the cord is plugged into an amp, I can transfer both visible and infrared light into sound. I was wondering if you know if there are any solar panels out there that are sensitive to UV light (I get that it is not the most efficient for generating electricity). I was really hoping to add UV light to the illustration but a UV flashlight just blocks the visible light and does not produce a sound with the panel that I have right now.

Thanks for your help!

Brooke

Ronald Brakels says:July 24, 2018 at 4:15 pm
The most UV sensitive solar cell I know of is amorphous silicon. Looking online I see they can still be bought. I suppose another option would be to use an ordinary silicon solar cell and cover it with a phosphor to convert UV light into visible light but I’m not sure how to go about that. Having kids cut open a fluorescent tube and exposing them to mercury vapor is probably frowned upon these days. Also the phosphor might decay very rapidly when exposed to air.

Martin says:November 21, 2018 at 7:04 am
So what happens in cloud cover and we get a Sun Burn through T Shirts. When the IR is being absorbed the UV flies through. So a boost of adding a high bandwidth of light in the blue and violets that are forgotten and make sure the various UV light that we have to protect our bodies from makes light.

Baode says:May 22, 2019 at 4:49 pm
"which is what the O3 at the bottom right corner stands for", [bottom right] might be typo for [bottom left].

Ronald Brakels says:May 22, 2019 at 10:47 pm
Oops, yes definitely should have been "bottom left". Thanks for pointing that out. Corrected now.

I really must learn to tell left from right one of these days.

casper van zyl says:September 3, 2019 at 1:34 am
Hi Ronald – thanx for a hughely insightful and humerous article – My congratulations to you and regards to Tonto !!!

Phil says:November 8, 2019 at 3:37 pm
Surely, if we could absorb more Infrared, we could prevent it from bouncing back up into the atmosphere – light in this wavelength is the core driver of the greenhouse effect.

Trees currently help deal with this. However, with fields ever turning concrete, panels that absorb infrared could help offset this.

We need this feature.

Rajesh says:December 6, 2019 at 5:43 am
Why can’t we use infrared part to heat up a TEG to produce electricity?

B says:November 10, 2020 at 5:16 am
Thank for the humorous and clear explanation to an utterly nascent type like myself. You answered several questions at once.

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