Thread: What is Light?
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Old April 18th 08 posted to sci.physics,alt.philosophy,alt.astronomy,sci.physics.relativity
John Graeme
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Posts: 10
Default What is Light?

Sanny wrote:
When in School I learnt 2 things about Light

1. Light is a Wave

I was shown Lenses and other Experiments to proove Light is a wave.


2. When I grew up I was told Light is Electro Magnetic Wave.

Later I was Told
3. Magnetic and Electric Field in a light travel at 90`

Can we Change the angle of movement of Electric & Magnetic Field? How
can we say they are perpendicular.

Later I was told Light has photons and its energy is = h*u

So light is a Particle moving at light Speed.

Then I was told Light is both Particle and Wave

Dont you feel things are getting Complex and Absurd.

After 12 years of my passing out of school I still want to know whats
the correct description of light.

Bye
Sanny


It's confusing only if you insist on thinking that human concepts like
"particle" and "wave" are some fundamental aspect of nature. They are
human constructs for understanding nature. Light is light--Under some
conditions it has wave properties; under others particle properties.
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