I made one of these myself about 10 years ago. You can easily melt modern pennies. Just remember even a fraction of a second in the beam and you will suffer a horrific burn. A family friend walked through the beam even after repeated warnings, and lucky for her the focal point was about the size of a basketball, but even a 1/4 second through the beam caused her pants to SMOKE!
Decades ago , when I was a teenager, my mother had a magnifying glass, a commercially produced item that was available in the 60's, made to prop itself on her chest and allow her to read the small print of a book while she was knitting, or darning socks ( she never sat and did just one thing at a time). As kid I would take that magnifying glass and set things on fire. One day, I focused it on the entrance hole of a large red ant hill. After a few seconds, red ants began boiling out of the hole and as soon as they were exposed to the focused light, were burned to a crisp. I have often thought of this of an environmentally friendly way to kill out an ant color y without poisoning the environment. As a collector of curious junk things, I have a fresnel lens from an old TV that I have carried around for years. I think I will use it to build a death ray for ants.
Hey remember me i watched you all the time and just came back to see how you were doing i see from the last time that i watched you you have gained 600 subscribers. I just wanted to wish you well in you're science channel because i think you have something great here. Thanks for doing what you do and i'll keep watching and enjoying you're videos
of course I remember you! You are one of my earliest and most frequent commenters! I thank you for that! And, thank you for coming back to check in! I've got a lot more on the way they are just slow in getting edited because school is back in session. Thanks for saying HI.
When you lowered your voice for the can pop i was so focused on what you were saying that the world could've ended around me, and I would still be there, agreeing with you that this is so cool!
Way too kind! Thank you! And, thanks for watching! (I did a little gig on TV for History about a year ago, more here if you are interested: www.bealsscience.com/home/category/Secret-Earth)
Thank you! More videos on the way soon! Just finishing up a CO2 Cryo-Gun that shoots fog and ice (and projectiles and t-shirts)... Coming soon! Thanks for watching.
If I get around to completing my design, I plan to have MCU controlled solar tracking (of course with the manual sun dial), a drop shade with a sensor to somehow provide a feedback loop to the system and users for controls when able to use, a heat guide shaped like a horn antenna that the horn portion is fixed to the lens and a fixed heater box portion that has a ball joint with the horn portion. I'm thinking this will be the safest design so I can not have to worry about goggles and people looking into the hot spot. Also, the cooking box or surface can be fixed and level during the complete process for ease of managing use. Amazed no one has done this yet. I'm also wondering about using two Fresnel lenses with one side edge together and the lenses at an angle focused to another Fresnel lens like a glass one from a projector or like a Fish-eye lens to possible utilize more lenses for a hotter spot for cloudy days. Seems the glass mirrors also have a potential oven design or even using to reflect more surface area at the Fresnel lens on cloudier days.
Try to melt rock into lava. Death ray supposelly heats to 2000F or 1,100C (about temp of lava) Those Rear-projection tv also have about 2 pretty strong capacitors. 250V 1,000 μF (M) Or Microfarad perfect for Tesla coils if you're into it.
That would be sweet! The only part of the tv I still have are the lenses. I will do some experimenting with them someday. Guess I should have pulled the capacitors too!
Bro i live in Phoenix Arizona, it's 118 degrees outside. I have one of those older large screen protection TV's sitting in my garage that's been there for years. I wasn't sure what to do with it until now.
Love your videos! The world is a better place with teachers like you. Would taking lenses from varying sized tvs and stacking them create a more powerful and focused beam? Or would the light become too diffused having to go through more screens?
Thank you for the kind words and thank you for the question, it is a good one! If you put multiple lenses together you could do a couple things. First, depending on how far the 'first' lens is from the 'second' lens, you could actually get the pinpoint of light (the focal point) to expand once again and the light on the other side would expand to the same area it covered before (the size of the first lens it entered). The other possibility is that you could get the focal length to shorten (or lengthen, depending on how far the 'second' lens is from the first and both lenses focal length). What that means is that the burger you are trying to cook wouldn't have to be so far away from the first lens. If the lens combination were just right and the focused light could be narrowed down to a tiny point, all of the energy would be focused into that one spot and it would be even more hot at that spot than it is in my video. This is because the energy coming in from the sun that is being focused does not change (unless you change the size of the fresnel lens) and therefore the energy (heat) can never become more powerful than it originally was when it hit the first lens. So, the better the focal point, the more energy in a localized area but we could never 'increase' the energy with more lenses. I found this hard to explain without a diagram so I found one to help in case you are like me and learn from pictures: goo.gl/ohgqrG Again, thanks for the great question.
hey bs! love your videos just saw your channel. you should be more famous then you are but keep up the good work! what state do you teach in? would be insane to have you as a teacher
Have you tried it under the moonlight. I hear there's also a benefit from moon light. Just like how the sun rays effect us in every way from mood to mental clarity and awareness maybe the moon also has a physiological effect that's beneficial to us. We already know the moon balances our circadian rhythm, maybe this frensel lens can magnify that effect somehow. I mean we already light therapy that works on the heating side of light, maybe there's a cooling side to light that's also beneficial. Doesn't hurt to try.
I recall watching someone cooking with moonlight also, though using a larger parabolic reflector I think that was a combination of troughs. Let me see if I can find. Here it is regarding really neat practical larger small scale solar implementations. www.tamera.org/solar-kitchen/ This is one of their novel reflectors: www.tamera.org/article-ultralight-membrane-mirror/ ruclips.net/video/3JCEmiriV0k/видео.html (One of the better videos I've found detailing Tamera)
I feel like that the metal sheet functions as a grill, and the beam functions as the flame. So when the beam comes in direct contact, or too close to the meat, it will leave an over cooked spot on the patty. Still efficient tbh😆
dakota neumann you are so correct! The beam is so hot it just seared the meat! But, with some planning the searing and internal cooking worked together to make an awesome burger!! Covering the meat with a glass lid seemed to help.
This is a good question! It takes quite a bit of light energy to get a pinpoint of energy so I am guessing the reflected light off of the moon would not provide enough energy to heat things up. But, I like your thinking! Any other ideas?
@@BealsScience It could probably make a good moonlight reading lamp. I odnt know how good the optics are, but I imagine, it could also be used as a kind of telescope if we placed a piece of white paper at the correct distance?
Saunterblugget Hampterfuppinshire it might melt the panel! But there are a lot of new solar arrays that are using mirrors (I made a different video showing that) and fresnel lenses to concentrate the sunlight into one spot. This heats a salt mixture until it is molten and the heat is used to generate electricity!!
I know I'm a bit late to the party but a very cool vid! I've seen someone do something similar but with many mirrors (whole contraption was about the same size but could focus to a point about the size of a quarter, the guy ended up burning down the shed it was stored in because a door wasn't secured properly and it hit his "death ray." Anyways I thought it would be a cool follow up video if you took that lens and placed it above a smaller one repeating until you got it to as fine a point as possible and maybe use it like a (bansaw I believe it's called) to either cut plywood or make designs with it. I understand that could be dangerous, particularly with children nearby, but it's just something to consider.
XDfunnyguy this is a great idea! I will edit together the tutorial of how to build the frame and in that video I use the sun to "write" on pieces of wood; kind of like a solar etch a sketch! I also built a parabolic mirror solar cooker and that video should be done before the end of the year! So, more solar fun is on the way!
Hyperiotic good idea! I've got some Onions Fusible Alloy, Bismuth and Gallium; all of which have a low melting point and might work perfectly! I will add it to the list. Thanks for commenting!
I have been filming some experiments with Gallium which, as you may know, has a very low melting point. I wanted to use the Fresnel Lens to try to melt it but the winter has arrived and we've got a bunch of snow. So, I hope to try it at some point but will probably have to wait until spring. Thanks again!
Get a small Co2 tank, like you get for pellet guns. That might be dangerous but you've got protective gear right? I mean. You put a tornado on a table so. Just a small tank. It's about the size of a thumb or bigger? I'm sure you've seen them. I'd like to see one of those explode. Or an empty Ferbreeze can. I don't know if that's too dangerous but I'd do it. From behind something protective.
![MISSING: SLIM SHADY [Expanded Mourner’s Edition Trailer]](http://i.ytimg.com/vi/xh8qgHrOO1g/mqdefault.jpg)
I made one of these myself about 10 years ago. You can easily melt modern pennies. Just remember even a fraction of a second in the beam and you will suffer a horrific burn. A family friend walked through the beam even after repeated warnings, and lucky for her the focal point was about the size of a basketball, but even a 1/4 second through the beam caused her pants to SMOKE!
Definitely don’t want to light your pants on fire!!!
Focus it on a parabolic mirror to get to a finer point and see if you can weld with it.
I think the heat would just burn through the mirror
@@thomasknight3599 Possibly, but mirrors reflect a high percentage or heat and certain mirrors are designed to handle this.
Decades ago , when I was a teenager, my mother had a magnifying glass, a commercially produced item that was available in the 60's, made to prop itself on her chest and allow her to read the small print of a book while she was knitting, or darning socks ( she never sat and did just one thing at a time).
As kid I would take that magnifying glass and set things on fire.
One day, I focused it on the entrance hole of a large red ant hill. After a few seconds, red ants began boiling out of the hole and as soon as they were exposed to the focused light, were burned to a crisp. I have often thought of this of an environmentally friendly way to kill out an ant color y without poisoning the environment.
As a collector of curious junk things, I have a fresnel lens from an old TV that I have carried around for years. I think I will use it to build a death ray for ants.
Hey remember me i watched you all the time and just came back to see how you were doing i see from the last time that i watched you you have gained 600 subscribers. I just wanted to wish you well in you're science channel because i think you have something great here. Thanks for doing what you do and i'll keep watching and enjoying you're videos
of course I remember you! You are one of my earliest and most frequent commenters! I thank you for that!
And, thank you for coming back to check in! I've got a lot more on the way they are just slow in getting edited because school is back in session.
Thanks for saying HI.
Any time
When you lowered your voice for the can pop i was so focused on what you were saying that the world could've ended around me, and I would still be there, agreeing with you that this is so cool!
😆
Thanks for watching!!
my #1 most favourite channel to watch science experiments.....No joke
WOW! And I thought your other compliment was the best one ever but this one takes the cake! Thank you!!!
ok ok
this video was FANTASTIC.
You truly should be on television.
GREAT guy. great enthusiasm. I love it!
Way too kind! Thank you! And, thanks for watching! (I did a little gig on TV for History about a year ago, more here if you are interested: www.bealsscience.com/home/category/Secret-Earth)
Wow! Thats so awesome. Thanks for sharing. Really hope you get a huge break one day and your blessed with a awesome opportunity.
Daron Lapping thank you!
In survival situations this would be great if you needed to cook food but can have a fire. You could even heat up rocks for hand warmers. Pretty cool
Good ideas!
Oh man, you are an awesome guy, you need loads more subs!
Thank you! More videos on the way soon! Just finishing up a CO2 Cryo-Gun that shoots fog and ice (and projectiles and t-shirts)...
Coming soon! Thanks for watching.
These things are pretty cool, plan on using one to make a boiler system
Let me know how it turns out!
If I get around to completing my design, I plan to have MCU controlled solar tracking (of course with the manual sun dial), a drop shade with a sensor to somehow provide a feedback loop to the system and users for controls when able to use, a heat guide shaped like a horn antenna that the horn portion is fixed to the lens and a fixed heater box portion that has a ball joint with the horn portion. I'm thinking this will be the safest design so I can not have to worry about goggles and people looking into the hot spot. Also, the cooking box or surface can be fixed and level during the complete process for ease of managing use. Amazed no one has done this yet. I'm also wondering about using two Fresnel lenses with one side edge together and the lenses at an angle focused to another Fresnel lens like a glass one from a projector or like a Fish-eye lens to possible utilize more lenses for a hotter spot for cloudy days. Seems the glass mirrors also have a potential oven design or even using to reflect more surface area at the Fresnel lens on cloudier days.
Try to melt rock into lava.
Death ray supposelly heats to 2000F or 1,100C (about temp of lava)
Those Rear-projection tv also have about 2 pretty strong capacitors.
250V 1,000 μF (M) Or Microfarad
perfect for Tesla coils if you're into it.
That would be sweet!
The only part of the tv I still have are the lenses. I will do some experimenting with them someday. Guess I should have pulled the capacitors too!
Bro i live in Phoenix Arizona, it's 118 degrees outside. I have one of those older large screen protection TV's sitting in my garage that's been there for years. I wasn't sure what to do with it until now.
You can burn a hole through all sorts of great things with those temperatures!
I tried to find a mini version of that thing but got a 3d mobile thingy to make screen bigger (about 3 usd)
And it worked
Thanks for your idea had fun
That’s awesome! What will you cook first?
Beals Science it's winter and little cloudy so I'll cook marshmallow in summer 🍢
Let me know how they turn out!
I wanted to try it hoping to success
Love your videos! The world is a better place with teachers like you. Would taking lenses from varying sized tvs and stacking them create a more powerful and focused beam? Or would the light become too diffused having to go through more screens?
Thank you for the kind words and thank you for the question, it is a good one!
If you put multiple lenses together you could do a couple things. First, depending on how far the 'first' lens is from the 'second' lens, you could actually get the pinpoint of light (the focal point) to expand once again and the light on the other side would expand to the same area it covered before (the size of the first lens it entered). The other possibility is that you could get the focal length to shorten (or lengthen, depending on how far the 'second' lens is from the first and both lenses focal length). What that means is that the burger you are trying to cook wouldn't have to be so far away from the first lens.
If the lens combination were just right and the focused light could be narrowed down to a tiny point, all of the energy would be focused into that one spot and it would be even more hot at that spot than it is in my video. This is because the energy coming in from the sun that is being focused does not change (unless you change the size of the fresnel lens) and therefore the energy (heat) can never become more powerful than it originally was when it hit the first lens.
So, the better the focal point, the more energy in a localized area but we could never 'increase' the energy with more lenses.
I found this hard to explain without a diagram so I found one to help in case you are like me and learn from pictures: goo.gl/ohgqrG
Again, thanks for the great question.
Nice work.........mine works. Fine too !
I wonder how many house fires were started by putting those TVs too close to the window?
🤔
Good I appreciate u bro,nice explantion
Thank you!
The most cracy is you are putting your fingers in so close to the ray!
👍
hey bs! love your videos just saw your channel. you should be more famous then you are but keep up the good work! what state do you teach in? would be insane to have you as a teacher
Rocky Manghani thank you for the kind words! I teach in the great state of Montana! "Big Sky Country"!
whoa! great video,thanks for sharing sir,god bless...
Thank you! And thanks for watching!
So Freaking Awesome
Thank you!
Have you tried it under the moonlight. I hear there's also a benefit from moon light. Just like how the sun rays effect us in every way from mood to mental clarity and awareness maybe the moon also has a physiological effect that's beneficial to us. We already know the moon balances our circadian rhythm, maybe this frensel lens can magnify that effect somehow. I mean we already light therapy that works on the heating side of light, maybe there's a cooling side to light that's also beneficial. Doesn't hurt to try.
I recall watching someone cooking with moonlight also, though using a larger parabolic reflector I think that was a combination of troughs. Let me see if I can find. Here it is regarding really neat practical larger small scale solar implementations. www.tamera.org/solar-kitchen/ This is one of their novel reflectors: www.tamera.org/article-ultralight-membrane-mirror/ ruclips.net/video/3JCEmiriV0k/видео.html (One of the better videos I've found detailing Tamera)
This could be a camping gadget!
Winnie The Beast absolutely! Just be careful not to burn down the whole forest! 😄
You could try baking soda and sugar mixed together it is what's in those snake fire works
+cory wilson (corjum) good idea! Maybe I could throw some potassium nitrate in with it and make a solar powered smoke bomb! Thanks for the idea!
Also it would be cool to see if you can magnify the sun's rays unfocused then focus like make it a Uber mega death ray.
It would definitely be cool to make a mechanical focus device to focus the point of light at any depth!
Good idea!
I feel like that the metal sheet functions as a grill, and the beam functions as the flame. So when the beam comes in direct contact, or too close to the meat, it will leave an over cooked spot on the patty. Still efficient tbh😆
dakota neumann you are so correct! The beam is so hot it just seared the meat! But, with some planning the searing and internal cooking worked together to make an awesome burger!! Covering the meat with a glass lid seemed to help.
Hay Bs have you tried heat treating with this process I know I’m gonna try
I have not. If you try it, please let me know how it turns out!
wonder if it would do anything in the moonlight
This is a good question! It takes quite a bit of light energy to get a pinpoint of energy so I am guessing the reflected light off of the moon would not provide enough energy to heat things up. But, I like your thinking! Any other ideas?
@@BealsScience It could probably make a good moonlight reading lamp. I odnt know how good the optics are, but I imagine, it could also be used as a kind of telescope if we placed a piece of white paper at the correct distance?
I know it’s been a long time since you made this video but I am wondering if it can get hot enough to make ruby from aluminum oxide powder.
I am not sure if it will get hot enough to do that but it would be an amazing application for this!
hi love your idea how about heating 40 gallon barrel of water how long for it to heat may be water for house?????????????????????????????????
That is a great idea! We could definitely try heating large amounts of water once summer finally comes back!
Thanks for the comment!
Pool heater? water just gets hot?
👍
Heat the water for your home?
Good idea!!
watching your burger to get heated up is better then watching the national TV on these screens, .... cook you burger instead of cook your brain ....
Thank you!
Radiated burgers..... yummy
🍔+☀️=👍
Front projection or rear projection tv?
Rear projection
Can you find out the btu on the output, I want to make a water heater to heat the home inside
Measuring the BTU is a great idea!
It is winter here now so it wouldn’t be very effective to test it right now but I will look into it in summer!
What if you tried to put solar panel under it, will it produce more electricity or just the same?
Saunterblugget Hampterfuppinshire it might melt the panel! But there are a lot of new solar arrays that are using mirrors (I made a different video showing that) and fresnel lenses to concentrate the sunlight into one spot. This heats a salt mixture until it is molten and the heat is used to generate electricity!!
Try an electric turntable to grill food evenly, I have some videos that show how it works
👍
I know I'm a bit late to the party but a very cool vid! I've seen someone do something similar but with many mirrors (whole contraption was about the same size but could focus to a point about the size of a quarter, the guy ended up burning down the shed it was stored in because a door wasn't secured properly and it hit his "death ray." Anyways I thought it would be a cool follow up video if you took that lens and placed it above a smaller one repeating until you got it to as fine a point as possible and maybe use it like a (bansaw I believe it's called) to either cut plywood or make designs with it. I understand that could be dangerous, particularly with children nearby, but it's just something to consider.
sorry for the essay I didn't intend to type that much
XDfunnyguy this is a great idea! I will edit together the tutorial of how to build the frame and in that video I use the sun to "write" on pieces of wood; kind of like a solar etch a sketch! I also built a parabolic mirror solar cooker and that video should be done before the end of the year! So, more solar fun is on the way!
XDfunnyguy I don't mind the essay in fact I appreciate it! Remember, I am a teacher so essays good in my world ;)
Thanks for watching!
How did your piece of steel hold up that you cooked with
I've reused it numerous times and it holds up well.
Unopened can 'o' beans. Film from far away tho. Popcorn sounds cool too.
+dan anderson can of beans is a great idea! That could make a huge mess! I like it! Thanks!
Can you control your heat by the focus of the lens
Yes! You can control it with focus and with adding a "cover" to trap the heat.
Does It actually heat the metal
Harbor the sun’s magnified & concentrated energy and try to somehow convert it into real energy
You could put gunpowder or try to make popcorn
Pablo Otoya Luque brilliant ideas!
Gunpowder would be awesome! And popcorn is my favorite! Both are on the list-thank you!
Beals Science thanks for "answering" please say my name in the video
Pablo Otoya Luque will do.
Any flat screen tv can do this thing sir?...
Only the projection flat tvs. The new led and lcd tv cannot do this.
Can u use a normal light I'm curious if it will work
This will only work with the sun. The lens can concentrate a normal light but there would not be enough energy to get it to burn wood.
Unless its a powerful led light sorce. Then it will get hot.
Que tipo de cuidados habría que tener, al manipular esta lente?
Can you boil an egg
Good question! I haven’t tried that but I need to!
Boil water attach to steam engin atach to generator attach to battery
Good idea!!
awesome, though the sun is local, and not 93.000.000 miles away, sun and moon are statet under the dome ( the firmament)
I use those sheets for art. It’s holographic
Great idea!
So is it “frennel “ or “fresnel”
Fresnel
@@BealsScience yes, I thought so. The S must be silent lol because everyone seems to be pronouncing it “frennel.”
👍
Put a glass bottle with opaque liquid in, like one of those glass cola bottles.
Peter Smythe good idea!
I will add it to the list to see what happens!
Thank you.
How you make this lens
The lens came out of a large projection tv.
I've seen someone boil a whole chicken in a pot of water using this lens
That’s awesome!
get a solar panel that wont melt and charge battery
Good idea!!
Try melting a metal with a low melting point!
Hyperiotic good idea! I've got some Onions Fusible Alloy, Bismuth and Gallium; all of which have a low melting point and might work perfectly! I will add it to the list. Thanks for commenting!
No problem. It's cool we get to contribute to your videos. It makes them all the more interesting.
I have been filming some experiments with Gallium which, as you may know, has a very low melting point. I wanted to use the Fresnel Lens to try to melt it but the winter has arrived and we've got a bunch of snow. So, I hope to try it at some point but will probably have to wait until spring.
Thanks again!
... .. .. .. -forgets about the termites and the Cyro takes apart televisions at five in the morning-
+Lively Cemetery I hope your tv survives the day. Unless it doesn't work. In that case-dissect that thing!
Get a small Co2 tank, like you get for pellet guns. That might be dangerous but you've got protective gear right? I mean. You put a tornado on a table so. Just a small tank. It's about the size of a thumb or bigger? I'm sure you've seen them. I'd like to see one of those explode. Or an empty Ferbreeze can. I don't know if that's too dangerous but I'd do it. From behind something protective.
Nevermind don't do that I'd feel horrible if you got hurt or it broke the screen o__o
@@livelycemetery3220 Thank you for being concerned about my well-being ;)
Water!
Try to boil water?
Yes water?!
Do you think that the ancients had their own deathrays?
Sure! Why not!
Although they probably weren't made from a fresnel lens on the front of a projection tv...
have you ever used a fresnel lens on a solar air heater? ruclips.net/video/pHk0PX8pbWY/видео.html
Just another toy for us men.
So true
make it simple, boil one gal of water to 220 degrees
Great idea!
No it's only mabe couple 1000s or even 100s of miles away not millions