- Lesson 96: Compound Microscope
- Lesson 97: William Gilbert
- Lesson 98: The Newspaper
- Lesson 99: The Telescope
Compound Microscope
The compound microscope uses two lenses to make an image bigger. The bigger lens is nearest the object, and the smaller is the eyepiece. You multiply the magnification power of the first lens by the power of the second lens, to get the total magnification power.
William Gilbert
The world before William was the world before the cause of magnetism was discovered. As you may have guessed, he discovered the cause of magnetism, though electromagnetism was already known to exist. He got interested in magnetism from work before him. He brought down in the old magnetism theory. He founded the scientific method, and was the first to write it down.
The Newspaper
Newspapers were used to spread information about events. The first documents like newspapers were in the roman empire, but they were written in Latin for the class that could read Latin, the people with the most power.
This changed as the printing press was created, and the newspaper became written in the common language. It lost value as the internet rose, as not many people could have them.
The Telescope
Telescopes work like microscopes. The bigger lens is nearer the stars, and the smaller, the eyepiece. The big lens is bent, and takes the light and they come together in the center of the tube. Then the light comes out to the eyepiece, and makes an image; closer up than with the naked eye.