A. Touch the lenses. B. Adjust the focus randomly. C. Clean the lenses. D. Shake the microscope. 相关知识点: 试题来源: 解析 C。解析:使用显微镜前应先清洁镜片。选项 A 触摸镜片会弄脏镜片。选项 B 不能随意调整焦距。选项 D 摇晃显微镜是错误的。
The confocal microscope, which is the focus of this article, is a type of optical microscope. Electron Microscope A microscope that uses electron lenses is called an electron microscope. It is characterized by observation using an electron beam rather than visible light. It has a higher ...
Become a Study.com member to unlock this answer! Create your account View this answer The objective lens of a microscope is responsible for its magnification. There are usually four different objectives on a light microscope, with four... See full answer below....
In contrast, the microscope looks inwards, delving deep into the minute details of matter, revealing the intricate complexities of life and materials. 11 Another point of difference is the lens system. A telescope primarily uses two lenses (objective and eyepiece) to bring distant objects into ...
A corneal scrape and culture sometimes follow the slit lamp microscope test. In this procedure, cells from the cornea are examined in a laboratory. Alternatively, a test called PCR is used on a swab of the cornea to check for the Acanthamoeba DNA. In some cases, confocal microscopy can diag...
A visual acuity test is used to check your vision in both eyes. A slit-lamp exam is used to check your eye with a microscope for inflammation or injury. A dye may be used to look for damage to your cornea (the surface of your eye). A corneal sample may be taken from an area ...
What increases my risk for a corneal ulcer?Dry eyes Eye injury from an accident, contact lenses, or a chemical splash Medical conditions, such as diabetes or rheumatoid arthritis Incorrect use of eye medicines Swollen eyelids Recent eye surgeryWhat are the signs and symptoms of a corneal ulcer?
CH-1 SEC-1 Discovering Cells & Microscopes. An Overview of Cells Cells are the basic unit of structure and function in living things. This means that. Microscopes History, Parts, and Usage. History of the Microscope Anton van Leeuwenhoek (mid 1600s) –“father of microscopy” –looked at ...
s crucial that your 'objectiveslead you logically towards your goal and are quantifiable. (grammar) The objective case; a noun or pronoun in that case. The lens or lenses of a camera, microscope, or other optical device closest to the object being examined. Synonyms * See also...
the lenses usually are marked. Common classroom microscopes have an eyepiece that magnifies the object to look 10 times (10x) larger than the object's actual size. The objective lenses on compound microscopes are attached to a rotating nosepiece so that viewers can change the level of magnificati...