(The Galileo Project - The Telescope.) Curved mirrors could be made with greater diameters than lenses.
Reflecting telescopes could therefore gather more light. Microscopes and telescopes are, of course, important instruments for scientists today.
They generally cost at least hundreds of thousands of dollars and are used by universities and other research institutions. Not coincidently, the advances in lenses also lead to the telescope being developed in the early 1600s.
It is important to carefully research what to get before you buy.
Otherwise, you may end with an instrument that is stuck in the closet as happens with countless thousands or millions of telescopes and microscopes. For a microscope, I recommend a quality "high school" level instrument with a 10X wide field eye piece lens, at least three objective lenses for powers up to 400x, fine and course focus, Abbe condenser and iris diaphragm, and a built in light source either fluorescent, halogen or LED.
All the principals of camera lenses generally apply to microscopes and telescopes.
In my Photograph and Math article I start my discussion of aperture with telescopes since they generally have a fixed focal length and a single aperture making the analysis easier. The first microscopes were developed around 1590 by Hans and Zacharias Janssen.
We are lucky enough today, however, that most families can afford to have a microscope and telescope far better than anything Hooke, Galileo or Newton would have had and indeed, better than many research instruments earlier in the 20th century.
I recommend every family with children get a microscope and telescope.
It is also an opportunity for parents and children to experience this wonder together.
Also, parental involment is necessary to get the child off on a solid footing.
Click to go directly to the Microscopes or Telescopes. They are basically the same as lenses, however, and often have film or digital cameras attached.Tags: Adult Dating, affair dating, sex dating