Photos labo lumiere

Voici les photos des labos de lumière!!

Here are all the photos from our light lab.  It was a WONDERFUL day!  I loved seeing you all discovering new ideas about light and coming up with your own observtions. If you have any pictures to share please email me them. 

Voir au sujet des laboratoires de lumière ici
Check out all of our light labs here

More light

Here are a few things that we learnt about today.  Fiber optics can transmit light over very long distances and are used for TV and telephone cables!

Next we learnt about laser light and how it is made.  

I also showed how light is transmitted through solids as opposed to air in this video.

 You can see another example of this demo here

Mixing Light

When you mix all the colours of paint you get brown or black. Yuck!  But with light you get WHITE!!!  I did a demonstration that shows how light wavelengths combine to form the colours we see based on the same three colours you can see if you look closely at your TV pixels: red, blue, and green.  (Not red blue, and yellow like paint!)

Paint colour wheel

Films overlapping are like paint ... but when you use lights ...

      

Additive properties of light

Red, Blue, Green spotlights

Imagine that the pink background is more white and now notice the yellow, magenta and cyan shadows!