This invention uses mirrors to let people see above the water in a submarine.
What is a periscope.
These parts of a camera and eye focus light
What is lens and lens.
This part of a camera and this part of an eye allows light to enter
What is pupil and aperature
This part of a camera and this part of an eye adjusts how much light enters the camera
What is iris and diaphragm
This type of telescope uses lenses.
What is a refracting telescope.
The ray of light which leaves a medium.
What is the refracted ray.
This part of the camera and this part of an eye captures the image
What is retina and film
Near sighted people need to use this kind of lens in their glasses.
What are concave lenses
The invention of the microscope allowed us to study small living things leading to the science of this.
What is microbiology.