Sunday, October 11, 2009

this week in science

this week in science, we were discussing what other forms that light could travel in other than straight lines like we have expressed in previous discussions and experiment drawings that we have drawn.
We have read that in the 1600's, Isaac Newton thought of a ray diagram that consists of light rays traveling in the form of waves or particles. The wave model is better to use when we are talking about shadows. We explain shadows as when the waves gets topped by a solid and still bend around the object making the dark part very crisp. But as the waves hit the edge of the solid substance, they bend around the substance and travel while spreading out and when they hit the ground, then they have light around this darkness which is caused by the light blocked off by the solid substance.
The particle model explains how we see. the balls or particles bounce off objects and go into my eye causing me to see what ever they bounced off.
We were led into this discussion on how else does light travel. So we compared i to when we bounced basketballs and dripped water droplets into a small collection of water and saw how the waves\ripples traveled through the water and would not go behind a solid substance which was in the water.-the ripples would not go through the solid substance, but they go around the solid mass and spread all over the water quickly.

Back to the particle models
The particle model claims that the particles bounce off the masses that they hit bouncing particles everywhere. and then, those particles go into our eyes letting us see what the y bounced off of.
The wave particle model claims that the waves are just like the light rays and they travel like the light rays and they bend around a mass and and light casts on the ground. and the parts that the light could not reach due to the mass, is called the shadow.
Thats what we learnt in science,(i think) jkjk

this scientific ideas that we should know about shadows are: when we want ot make a shadow, all we have to do is stand and we know how to focus our shadow when we want to and make our shadow fuzzy and blurry if we want.
We would be able to keep something cool if we want by blocking off light that could fall onto the object we want to keep cool.

2 comments:

Mr. Segen said...

Aditya, This is good blog entry. I want it to be great, though! You're missing why the science ideas are important.

Once you update your entry, email me so I know to change your blog grade from partial credit to full credit!

tree said...

is this better? i added a part about shadows