Since 7, I always have a weird idea in mind As light can be in any colors, then why not black Later at 15, I understand that black = absence of (visible) light (photons) but would it be cool if we have a lamp that shines darkness? I once have discussed this idea with my physics teacher before. Original idea: Something that acts like light (I'll call them Dark photons), that is the opposite of light, when the two collide, they aniliate each other, rendering the result area dark, so it'll look like a lamp that project darkness but my physics teacher said this does not work as 1. The antiparticle of photon is itself 2. It violates the conservation of energy Instead he modified my idea a bit and propose a new proposal New idea: Instead of acting like EM waves, why not have a stream of particles (or even quasiparticles) that radiated from a source in all directions which converts all visible photons that collided with them into IR (simply like a frequency modifier), as IR is invisible to humans, it can produce the same dimming effect. He also think the dark emitters, if possible can have a wide variety of applications At that moment i thought it'll be a good idea, but after some careful thoughts, i think it (the new idea) 'll pose radiation hazard to organisms (e.g. overheating, Sunburns etc.) (including humans) Guys what do you think of it and is it possible to produce a dark emitter that is safe, using known laws of physics?