| 单词 | 显微镜 |
| 释义 | 显微镜 🔬 The microscope capacitates small objects to be observed. Viewing the salamanders under a fluorescent microscope, the researchers were able to see the algal pigments“ shine” when they were illuminated with light of a certain wavelength. But then he put them under a microscope and noticed that each of these small, insignificant shells had a tiny hole in its lip. As the fly responded to virtual objects flying around it, the scientists used a fluorescent microscope to watch how its brain processed the images. Electron microscopes shoot a high- voltage beam of electrons onto or through an object, which deflects and absorbs some of the electrons. But electron microscopes use beams of electrons, instead of light. If all goes according to plan, the microscope could be generating images by the end of this year. He also developed early radar, invented the first electronic microscope, and worked on developing peaceful uses of atomic energy. Not only might it have applications in fields such as microscopy, but it apparently also has the ability to optically store data forever. By looking at the hair follicles under microscopes, they saw when the stem cells turned into other cell types and linked the change to the graying hair. To see anything smaller than500 nm, you will need an electron microscope. I study your feet with the microscope and your soul with the telescope. This, he claimed, was the result of my not having adjusted the microscope properly, so he would readjust it for me, or rather, for himself. And I would look again and see milk. Researchers view each hair- thin wafer of brain tissue under a microscope outfitted with a laser for precision dissection. So we tried it with every adjustment of the microscope known to man. In contrast, the scanning electron microscope reveals a world familiar to the way we naturally see things, a world with outer surfaces and in three dimensions. In microphotography, there are specialized cameras built into the microscopes— doctors can take photos using a keyboard after we teach them how to set these up for best lighting and sharpness. The slightest movement will defocus the microscope. In 1980, a scientist looking at bone fragments under an ultraviolet microscope noticed the bones were glowing green—a hallmark of the antibiotic tetracycline. And they’re using scanning and transmission electron microscopes to find the source of a nest- marking chemical that female bees secrete. Telling one neuron from another under the microscope is not easy. |
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