wide in the middle and stuff like that.
Romans experimented with different shapes of clear glass lenses. This experimentation accidentally resulted in the creation of the magnifying glass.
it can help them see smaller things in ore detail
I don't think this is right but It might be the spectrum of visible light. You know the rainbow?
The Romans discovered that different shapes of clear glass lenses could magnify and focus light, leading to the development of rudimentary magnifying glasses and the basis for early forms of eyeglasses. They also realized that curved lenses could correct vision problems by bending light in specific ways.
Roman citizens in Phoenicia (Lebanon) discovered glass blowing. They found out that If you gather molten glass on the end of a pipe, it could be inflated, and thereafter easily formed into just about any object.
It was developed, and then you might say improved or modified over time. Zaccharias Janssen and Hans Janssen experimented with lenses that would help make the light microscope, as did Galileo. Anton van Leeuwenhoek also experimented with microscopes and so did Robert Hooke.
Yes, you can use different brand lenses on a camera as long as they are compatible with the camera's mount.
primary lenses are that lenses which are maked by leunhoek .these lenses are used to see parts of different objects and these lenses had maked first.they are mostly used in ancient time. .
Microscopes use different amounts of lenses depending on the microscope.
B&H Photos and Video carries over 200 different lenses for Nikon SLRs alone.
There are many different lenses for cameras; Wide angle lenses, standard lenses, portrait lenses, telephoto lenses and more. Canon has its own brand of lenses but also Sigma y Tamron are offering compatible lenses for it, it just depends on the price and the quality you are looking for
Different divisions are for different kinds of people.