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19-Year-Old Makes Homemade Solar Death Ray

An anonymous reader writes "Concentrated solar power has the potential to generate immense amounts of energy — but it can also be amazingly destructive. American student Eric Jacqmain has assembled over 5,800 mirrors into his own parabolic 'solar Death Ray'."

4 of 317 comments (clear)

  1. Re:Electricity? by ZombieWomble · · Score: 5, Informative
    I can provide the following insight: Lasers do not work that way.

    More specifically, there are two issues with your suggestion. Firstly, lasers are not power-limited by input light, but rather by the design of the lasing cavity and how efficiently it stimulates further emission. Many types do need a decent kick to get them going, but beyond that a bright source offers little or no benefit.

    Secondly, even if more input light was useful, this mirror doesn't actually provide that much power. It's just the use of the parabolic reflector to concentrate the energy into a small energy that makes it look impressive. Looking at the dish, it's a few square metres in area, at most. That's only a few kW of light in total, of which only a tiny portion is at any one wavelength which would be useful for pumping a laser. An appropriate pump laser or even a decent flashlamp would be vastly better than this for stimulating laser emission.

    Also, LASER. Light Amplification by Stimulated Emission of Radiation.

  2. Re:Title is little misleading, to say the least. by jovius · · Score: 5, Informative

    The tiny mirror pieces are from a mirror ball. Yes, I actually do go out sometimes.

  3. Re:This is retarded. by Anonymous Coward · · Score: 5, Informative

    You're retarded, small focused flat mirrors are more efficient and less prone to scatter than a non perfect parabolic shape. Not to mention the reflectivity of actual mirror is far superior to any sprays or sheeting you could cheaply purchase. There is a reason the cells of production solar plants use flat mirrors that they combine to form a parrabolic array.

  4. Re:Mythbuster 3.0 by GooberToo · · Score: 4, Informative

    I had to follow up with an example that shows their stupidity.

    Bimp burns.
    Bimp with hydrogen burns fast.
    Bimp with thermite burns slower than just hydrogen but still burns considerably faster than simple material.
    Bimp burns super faster with hydrogen + thermite, which accurately reproduces historic tragedy. The conclusion of intelligent people is hardly surprising; accelerent do exactly that and thermite clearly works as an accelerent with hydrogen (likely the extra O being provided).Their conclusion - busted. WTF!?!?! But if you ignore their stupidity which is their "conclusion", the reality is, they absolutely "confirmed" the myth, which was thermite (their coating) played a significant role in the speed of destruction. Its literally impossible to view the material with any other conclusion and yet they believe they busted it. Seemingly, they came to a conclusion which isn't even remotely supported by the available material or their tests. WTF?!?