Turning gravity into light

[Baruch]

Tut-tut ... a source of light provided free by the UN, is cheapest in the Third World, no matter what kind it is ;-)

I am surprised, on behalf of readers, nobody has posted ... the math is very simple ...

Conservation of Energy:

E=K+V+T

E=total energy
K=kinetic energy (that provided dropping of weight)
V=potential energy (that provided by raising the weight)
T=energy lost to friction

You raise the temperature of the room a little, each time you use it.  Also the kinetic energy is converted to light, and that is eventually converted to heat.  The conversion from kinetic to light energy is also not 100% efficient, and that also is converted to heat.  Eventually thanks to whatever raises the weight, the darkness returns, and the light ceases.

[Hakurei Reimu]

What of it? What you say applies to every source of light, including the sun.

[Termin]

  I think a great commercial application of this is attach it to a garage door.  Opening the door activates the light.

[Baruch]

What of it? What you say applies to every source of light, including the sun.

And in a sense, the Sun is powered by gravity.  I think the original controversy of this string ... has to do with primitive cause/effect thinking.

[facebook164]

  I think a great commercial application of this is attach it to a garage door.  Opening the door activates the light.

You realize that requires the door to, slowly, close?

[facebook164]

And in a sense, the Sun is powered by gravity. 

No, the process is enabled by gravity but it is not powered by it.

[Shiranu]

Physics semantics... ech.

[facebook164]

Physics semantics... ech.

Ignoramus.

[josephpalazzo]

You realize that requires the door to, slowly, close?

No, the process is enabled by gravity but it is not powered by it.

Hey, this obliges me to upgrade your report card from an "F" to a "B⁺".