Curiously, this most common of atomic parts has only a fuzzy estimate of size.
Linus Pauling says "The radius of the electron has not been determined exactly, but it is known to be less than 1 X 10-13 cm".
So roughly the electron is 1/1000 the size of a proton. Maybe. But a cooler answer is-- physicists are annoyed by the question. A good case can be made for other sizes, even huge sizes....because the properties of the electron OTHER than it's size are the ONLY important ones. In fact the size of atomic pieces smaller than the nucleus usually does not matter at all....and may in fact have no meaning. After all, how do you propose to measure these guys?
The electron is known to be a point particle down to a limit of 10^-18m. It, as far as we know does not have a classical "size".
scanning electron microscope
Because of their very small size Viruses can only be seen via an electron microscope.
compound light microscope - cell theory - electron microscope
An electron microscope is capable of magnifying objects up to a million times. This type of microscope uses a beam of accelerated electrons to view specimens at a much higher resolution compared to light microscopes.
A virus of 50nm would be too small to see unless an electron microscope was used because it has greater resolving power and a resolution up to .1nm. A microscope using compound light as the means of illumination could not resolve better than approx. 200nms.
An electron microscope would be the most suitable to view a virus that is 50 nanometers in size. The resolution of an electron microscope is much higher than a light microscope, allowing for visualization of smaller structures like viruses.
An electron microscope is a device to be able to see items that are smaller in size than the "sampling rate of light" is in physical size. (The length of a wave of light).
scanning electron microscope
Because of their very small size Viruses can only be seen via an electron microscope.
Viruses can only be seen with electron microscopes
There is a compound light microscope, an scannignn electron microscope, and transmission electron microscope.
what is the principal of electron microscope
Stereomicroscope, Compound Microscope, Phase-contrast microscope, electron microscope, Scanning-electron microscope, Transmission electron microscope, Confocal-scanning microscope. THESE ARE JUST SOME. :)
The four main types of microscopes are the Light Microscope, Electron Microscope, the Transition electron microscope and Scanning electron microscope.
An Electron Microscope is used to study the contents of a nucleus.
compound light microscope - cell theory - electron microscope
You would need an electron microscope to see a ribosome, as they are very small structures, typically around 20-30 nanometers in size, which are below the resolution limit of a light microscope. Electron microscopes use a beam of electrons instead of light to achieve much higher resolution.