Existentialism wrote:I registered on these forums just to posit that the person on the right is Michio Kaku. That is all.
cronjob wrote:Electromagnetic radiation is pure energy with no mass. This covers the entire spectrum. Both visible and non-visible.
Electromagnetic radiation actually consists of vibrating/pulsating waves of electrical and magnetic energy. Additionally, electromagnetic radiation can be thought of as a stream of packets of energy. These packets of massless energy are called photons. Each photon particle still "travels" in a wave form type of pattern. Each photon has a certain amount of energy. All electromagnetic radiation consists of photons. The only thing that is different from one type of electromagnetic radiation to the next is the amount of energy contained within the actual photons themselves.
This much I already know.
I also know that electromagnetic radiation travels in a straight line at the speed of light (3 x 108 m/s). And yet packets collide. They radiate. This is how they move and they exchange information when they collide. This much I already know.
I also know that from the day we are born until the day we die, almost every single photon that strikes the surfaces of our eyes is local due to Earths proximity to something the called the Sun. To see Andromeda, those photons have to wade through the overwhelming amount of photons that our entire solar system has been bathing in since our own star went online 4.5 billion years ago. Photons must therefor be able to pass on "information" (of a kind) when they collide, for us to see Andromeda.
So, while the idea of a single photon traveling 250 million light years just to be absorbed by the human eye may seem like a romantic notion to some, that's not actually how it works.
p.s. I still want to know if anybody out there does know and can explain it to the unwashed among us...
It is such a beautiful question.
Both ideas are charming.
Maybe it is a little of both or neither.
I don't know the answer.
I like the question.
I, also, think other posters might want to explain the both a particle AND a wave thing.
One more time.