Microscopes are used to see small things. What kind of things can we see with a microscope? A. Atoms B. Molecules C. Cells D. Galaxies 相关知识点: 试题来源: 解析 C。解析:We can see cells with a microscope. Atoms and molecules are too small to be seen with a normal microscope. ...
Electron microscopes are used to visualize the ultramicroscopic structures of cells, bacteria, viruses, biopsy samples, and crystals. It uses a high accelerated beam of electrons that are short waves used to magnify the image.Answer and Explanation: Immersion oil is used to...
Nonetheless, they have not replaced the light microscope. One problem with electron microscopes is that they cannot be used to study living specimens because the specimen must be held in a vacuum chamber; that is, all the air and liquid must be removed. For a biologist studying a living ...
Microtubules, which are proteins shaped like tubes, are one component of the cytoskeleton. They are involved in maintaining the shape of the cell; without them, the cell would be squished by its neighboring cells. They are also responsible for organizing the inside of the cell and for various...
An optical microscope (also called a light microscope) uses visible light to observe an object. In general, the term “microscope” often refers to optical microscopes. Optical microscopes are often used in fields such as medicine and biology, with magnifications ranging from several tens t...
Another difference in types of stereo microscopes is the type of illumination they use—for example, an LED ring light, fluorescent bulb, or fiber-optics, whether they are equipped with a digital camera and/or video capability, and whether they include a video monitor. Various types of stereo...
Today, ‘things’ are incredibly important both before and during our travels, and we are usually accompanied by a wealth of ‘stuff’. First there is the right luggage, whether finding bags small enough to qualify as ‘carry on’ for the plane, or cases large enough to contain all the ...
The light microscope and electron microscope are more frequently employed microscopes for particle identification. These instruments are used to identify crime evidences, contaminants, and hazardous materials. It is found that the physical attributes such as grain size and shape of particles are better ...
Because the polarizing stripes reduce the amount of light entering the eye, these lenses should not be used at night or in other situations where clear lenses are required. It is not possible to make such lenses truly clear; even those with low levels of polarization have a slightly gray hue...
A microscope(显微镜) is a useful instrument for observing small objects by producing a bigger image. The microscope shows details that cannot be seen the naked eye(肉眼). Before using the microscope, please read the instructions below. CAUTION: Microscopes are both easily broken ...