Because the smallest wavelength of visible light we can see is around 400 nm. Something 200 nm would need an electron microscope to be seen.
A light microscope produces an image of a specimen by passing visible light through it. This light passes through the specimen, is refracted and magnified by the lenses in the microscope, and then projected to create a magnified image that can be viewed through the eyepiece or captured using a camera.
The high power lens of a microscope is used to magnify the image of the specimen to show details that are not visible with lower magnification. It is typically used to observe finer structures and smaller details of the specimen.
The illuminator on a microscope provides light to illuminate the specimen being viewed. It can be adjusted to control the intensity and direction of the light to enhance the visibility of the specimen under magnification.
The light source of a microscope is used to illuminate the specimen being observed. It provides the necessary light for the object to be visible and for details to be seen clearly under magnification. Different types of microscopes use different light sources, such as LED, halogen, or fluorescent bulbs.
You get to see bacteria,protists, germs in general, etc.
Specimen orientation on a microscope refers to the position and alignment of the specimen on the microscope stage. Correct orientation is important to ensure that the desired area of the specimen is visible and in focus under the microscope objective lens. Properly orienting the specimen allows for accurate observation and analysis of its features.
The amount of specimen visible on a microscope is referred to as the field of view. This refers to the diameter of the circular area that is visible when looking through the microscope. The field of view may vary depending on the magnification level of the microscope lens.
A light microscope produces an image of a specimen by passing visible light through it. This light passes through the specimen, is refracted and magnified by the lenses in the microscope, and then projected to create a magnified image that can be viewed through the eyepiece or captured using a camera.
The specimen appeared as a collection of individual cells or particles, which were visible at a very high magnification. The color, shape, and arrangement of the specimen's components could be observed in detail under the microscope.
The field of a microscope refers to the area of the specimen or sample that is visible through the eyepiece or camera. It represents the extent of the specimen that can be observed at one time under the microscope's magnification. A larger field of view allows more of the sample to be seen at once, while a smaller field offers higher magnification but limits the visible area.
A virtual image of a specimen is produced by an optical microscope, which magnifies the specimen using lenses to create an enlarged view that is visible to the human eye. This type of microscope does not require direct contact between the specimen and the lens, hence producing a virtual image.
An example is methylene blue.
Field of view refers to the diameter of the area visible when looking through a microscope. It is determined by the microscope's objective lens and eyepiece combination. A larger field of view allows for more of the specimen to be seen at once, while a smaller field of view provides higher magnification but less visible area.
Light source located beneath the specimen illuminates it in a microscope. This light passes through the specimen, highlighting its details and making it visible to the viewer through the eyepiece. Adjusting the intensity and angle of the light source can help enhance the image quality and clarity of the specimen.
An electron microscope uses a beam of electrons to illuminate the specimen, creating an image with higher resolution and magnification than a light microscope. The electron beam interacts with the specimen, producing signals that are used to generate a detailed image of the sample's surface or internal structure. Electrons have shorter wavelengths than visible light, enabling electron microscopes to visualize objects at a much smaller scale.
The high power lens of a microscope is used to magnify the image of the specimen to show details that are not visible with lower magnification. It is typically used to observe finer structures and smaller details of the specimen.
A light microscope uses visible light to magnify the specimen, allowing for observation of living cells and tissues. In contrast, an electron microscope uses a beam of electrons to achieve higher resolution and magnification, enabling visualization of smaller structures such as viruses and molecules.