According to Wikipedia: Viruses are ancient. Studies at the molecular level have revealed relationships that show viral proteins that pre-date the divergence of life and thus the last universal common ancestor. This indicates that some viruses emerged early in the evolution of life, and that viruses have probably arisen multiple times.
I would think a skin cell because there are skin cells floating around every were so when they were testing it they would see a skin cell
Cork Cell
Bacteria were the first to be seen under the microscope.
It was a cork (tree cells).
1981
Only the largest of viruses (e.g. Pox viruses) can be seen with a good light microscope (albeit with poor detail). Viruses usually can only be seen by electron microscopy. [2nd year Dental student, Naser]
High quality electron microscopes can cost from $250000 to $1000000;but a 500W USB electron microscope/digital optical microscope 400x costs under $100.
you put it under a microscope and count the individual electrons. to derive your final answer you divide it by the total volume of your shape and it is measured in electrons/cm^2
i wouldn't really say these are "affordable". seriously, they're extremely expensive, but if you don't care, here's one:http://www.recycledgoods.com/23320_Amray_1860%20FE_Scanning%20Electron%20Microscope%20w/Digital%20Imaging%20~!~.htmli wouldn't call $69,995.00 affordable
A detection beam on a microscope is a beam of high energy light. The beam allows individuals to see clearly and in more detail the substance or object under the microscope.
Viruses are too small to be seen directly with a light microscope.Can be seen when it's examined under an electron microscope
Yes, bacteria can be seen under a light microscope as they are larger than viruses. However, viruses are much smaller and cannot be seen with a light microscope. Specialized electron microscopes are required to visualize viruses.
Only the largest of viruses (e.g. Pox viruses) can be seen with a good light microscope (albeit with poor detail). Viruses usually can only be seen by electron microscopy. [2nd year Dental student, Naser]
only under an electron microscope wiki it
An electron microscope has a much higher magnifying power and resolution than a regular light microscope. One can visualize molecules and even atoms using an electron microscope. This is not possible with a light microscope
You can only view non-living things under the electron microscope, while with the compound you can view living organisms
because the microscope magnifies the cell to much.
impossible is nothing
electron
Gram-positive and gram-negative refer to the Gram stain used to prepare slides of bacteria for viewing under a light microscope. Viruses are too small to see under a light microscope and have to be prepared differently for viewing under an electron microscope. So the answer to your question is neither
animal cell
The first object to be seen under the microscope was poo.