Tuesday, April 7, 2009

Catching a wave

The art and work that goes into simply catching a wave is crazy. There is so much physics. The waves that we create while in the water and the torques that we create to propel ourselves through the water is really cool. Every time I stick one arm into the water and push or pull myself thorough the water i create a rotational force that propels me through the water. In order for me to travel in a straight line i have to use both arms one after the other so that with each stroke i counter the other with a stroke of my other arm. That's some real fun in the sun.

Tuesday, February 17, 2009

Terminal velocity



I was watching this show on the this other day and i saw this episode on myth busters about a falling body. When they would drop buster from the airplane it would hurdle towards earth at a maximum speed of 120 miles per hour. This is called terminal velocity, which is the maximum speed an object falls at. This depends on mass and gravity, more mass could mean a higher terminal velocity but this is not exactly true. It also depends on the gravity too. More gravity means more force pushing on the object to go towards earth. its glad too know if i were to fall out of an airplane i could fall towards earth at a pritty cool speed of 120 miles per hour.

Friction and speed



The other day when i was taking a shower i noticed that when i dropped the soap that the instant it hit the ground it picked up speed but by the time it the other side of the shower it was moving at a slower speed. The cause of this is friction, even though the soap is slippery it is not that slippery. It is still affected by friction this occurs when the surface an object is moving on slows down the moving object. This was good for me i guess because if there was no friction then the soap could slide around forever.

Monday, December 1, 2008

Journal 9

Over this small amount of time, i have learned many things that have ti deal with physics. Sound, light, and vibrations are all the same thin but at what frequency is key. They vibrate faster than the human ear can hear and the human eye can percieve. Physics is all aorund us this is cool.

Journal 8

While i was at home i was trying to filter sound waves with small filters. This is impossible becuase sound waves dont vibrate in uniform axis hey vibrate in every which way. his makes sound impossible to filter. I thought that sound could be filtered just like light. But i guess i can't.

Journal 7

When i was at home the other day and i was looking into the sky, in some areas there was less light or there was a change in intensity. This means that sunlight in the sky is polarized. There is light and the light is being flitered throuh small air molecules which makes the light polarized. I didn't know the sky is one big filter.

Journal 6

This weekend while i was at home i was looking through my polarized glases and there was less glare. When i take them off the glare would return. My glases have filters which blocks out either verticle or horizontal rays of light. This stops glare from bouning off of flat surfaces into our eyes. My glases can block certain rays of light thats crazy.