Helicopter

Since a wonderful commenter wanted me to post about my air hogs helicopter, I guess I will.

So when the propellers spin, air comes at it and splits, the top of the propeller is bent so air has to move faster on the top to meet at the other end, that causes low pressure. That makes the helicopter move up. To move up faster the helicopter tilts it's wings more to cause lower pressure and so the helicopter takes that space faster.

Stereos

This morning I was wondering how stereos work. So I did some research and I figured out how. So if you didn't know how sound works I'll tell you. So let's say I was playing the guitar and so when I hit the strings the string vibrates and those vibrations move the molecules then your ear picks that up and you brain interprets it so you hear sound.



So stereos have 2 main parts, an electro magnet and a permanent magnet. Inside the stereo is 2 electro magnets and in the middle is a permanent magnet. the 2 electro magnets turn on and off to make the permanent magnet vibrate and it starts the process above. So now you know how stereos work. Headphones and earphones work the same but smaller.

Zero Gravity!

I just got an air hogs zero gravity micro rc car! It is a remote controlled car that can stick to walls or ceilings. With that amount of traction it does really good doughnuts!




You may be and I was wondering how in the world can this car stick to walls? This diagram can
help you out. The air under the car gets sucked out by the fan on top and pushed upward. That causes low pressure under the car, than the air comes back and pushes on the car and keeps it on the wall! The zero gravity car does not defy the laws of physics but merely uses it's surroundings! My favorite thing to do.

My Periscope

This sunday I was really bored. I decided to make a periscope. I had to improvise to my surroundings so I used a hand mirror and an odd circle mirror thingy. It's not perfect but it works.

Here is a demonstation of my experiment.