What are reflecting telescopes made of? A. Lenses B. Mirrors C. Both lenses and mirrors D. None of the above 相关知识点: 试题来源: 解析 B。解析:文章中提到“Reflecting telescopes use mirrors.”,反射式望远镜是由镜子组成的。反馈 收藏 ...
Specimens are cut into extremely thin sections, and the transmission electron microscope aims an electron beam through a section, just as a light microscope aims a beam of light through a specimen. However, instead of lenses made of glass, the transmission electron microscope uses electromagnets as...
Though glass lenses have the best optical quality, they are not recommended for active sports because they are heavy and more likely to shatter on impact than lenses made of polycarbonate or other materials. For the best possible vision, comfort and clarity in changing light conditions, considerph...
There are six types of lenses. A lens is made according to the laws of light refraction. A lens is an optical element made of transparent substances such as glass, crystal, etc. A lens is a refracting mirror with two spherical surfaces, or a transparent body with one spherical surface ...
i wear contact lenses i weat to school one i well believe you i went into shock i went to australia i went to the doctor i went too far i went up there i whispered cry i who have nothing i wil not agree i will accompany his i will always feel th i will always ove you i will...
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What are tears made of? Natural tears are made of enzymes, electrolytes, metabolites and lipids. The material is similar to saliva. Tears have three layers. When grouped together, these layers are also known as tear film: Theoily outer layerkeeps the eye’s surface smooth and prevents the ...
Or are you projecting the whole image circle on the same size screen and evaluating the lenses as they would most commonly be used? Yes the whole question of "what are the highest resolving lenses" is not really a simple one with a straightforward answer. Ther...
52、ive websites.Searching for new hand-held devices.Because they have made great contribution to the electronic age.Because they are average people who like to do everything by themselves.Because they demand the same rights of being heard as famous authors and artists.Because they are passionate...
What is a characteristic of point by point style. writing? A 、Writers can focus on comparing things through unique lenses or perspectives in each paragraph.B、The writer can focus on completely explaining one subject in each paragraph.C、The writer will personalize or reflect on the comparison ...