In tech we learned about the size of the solar system. The distance from the center of the earth to the center of the sun is 1 astronomical unit. The distance from earth to Jupiter varies from 4.2 to 6.5 astronomical units. That’s a lot. In our galaxy their is 100 thousand million stars. Our galaxy has an average amount of stars. There are two million million galaxies. Each stars has planets like us. So humans are so tiny compared to the universe. So nothing matters.
In tech we learned about atoms. They are so small. If you had a ball of nitrogen atoms the size of a grapefruit. You would have to make it the size of earth for the atoms to be the size of a blueberry. In the middle of the atom there is a nucleus. I the nucleus there are positively charged protons and neutrons that have no charge. Protons don’t like other protons like when two girls were the same dress. The neutrons are there so the nucleus can stay together. On the outside there are electrons. They are negatively charged. They are more in a cloud but we draw them differently.
Today I finished my automaton. It uses a Cam mechanism. When I turn the paper circle the cams spin. Since its not a perfect circle it pushes the thing attache to the dolphins up. A lot of things use this. Most cars uses this inside of the car. One challenge was making it so what goes up and down doesn’t rub against something so it goes up and down.