Yes, Anthony van Leeuwenhoek, the inventor of the microscope, did so in the 1600's.
Sperm cells are way too small to see with the naked eye. You need a microscope to see the individual cells. Now you can see semen as a whole without a microscope, and semen is usually cloudy white in appearance.
scrutinize
Semen can be from transparent to white but there's always sperms in there. Each sperm is incredibly small, you need a microscope to see them.
If you have reached puberty the sperm is mature. Before puberty you have semen but no sperm. To see if the sperm is no good when it comes to impregnate someone that can only be seen in a microscope.
Bacteria is the smallest thing that can be seen using a microscope.
using a microscope
By using a microscope.
Without a microscope? Never. Atoms are much to small to see with the naked eye...
you can see more detail when u look thru a microscope
Using a microscope allows you to see the microscopic fibres that make up felt.
they saw cells
The basic requirement for you to see an object using the microscope is light. The amount of light will determine the visibility of the specimen.