Alert icon
We're changing our privacy policy. This stuff matters.  Learn more  Dismiss

Light Photons, Rays, and Waves

Loading...

Sign in or sign up now!
Alert icon
Upgrade to the latest Flash Player for improved playback performance. Upgrade now or more info.
4,626
Loading...
Alert icon
Sign in or sign up now!
Alert icon

Uploaded by on Apr 13, 2009

Segment describing what light is.

Category:

Education

Tags:

License:

Standard YouTube License

  • likes, 2 dislikes

Link to this comment:

Share to:
see all

All Comments (8)

Sign In or Sign Up now to post a comment!
  • Energy= mass(speed of energy ^2)? just asking, it just came to me...

  • This is an invitation to see an artist theory on the physics of light and time!

    This theory is based on two postulates

    1. Is that the quantum wave particle function Ψ represents the forward passage of time ∆E ∆t ≥ h/2π itself

    2. Is that Heisenberg’s Uncertainty Principle ∆×∆p×≥h/4π that is formed by the w- function is the same uncertainty we have with any future event that we can interact with turning the possible into the actual!

    

  • @Toadstool42 about that... doesn't that time change as earth changes seasons? if earth's orbit is an ellipse, isn't there a point where it's closer and another where's further from the sun?

  • @EvilSiper by measuring standard light speed. for that you can use radar waves, for instance

  • how exactly do they "time" the time it takes the light from the sun to reach the earth :s

  • The Earth is 93 million miles from the Sun... not 98 million as stated in the video. Also the time for light to travel from the Sun to Earth is 8.3 minutes... It's fine to say approximately 8 mins, but when you put a clock on the screen showing 00:08:00:00 it implies the time is exactly 8 minutes. Not a bad video though.

Loading...

Alert icon
0 / 00Unsaved Playlist Return to active list
    1. Your queue is empty. Add videos to your queue using this button:
      or sign in to load a different list.
    Loading...Loading...Saving...
    • Clear all videos from this list
    • Learn more