顯微鏡外文翻譯-其他專業(yè)-資料下載頁(yè)
2025-01-19 12:17本頁(yè)面
【導(dǎo)讀】很早以前，人們就知道某些光學(xué)裝置能夠“放大”物體。比如在《墨經(jīng)》里面就記載了能。凸透鏡——有的時(shí)候人們把它稱為“放大鏡”——能夠聚焦太陽(yáng)光，也能。讓你看到放大后的物體，這是因?yàn)橥雇哥R能夠把光線偏折?；糜X(jué)，嚴(yán)格的說(shuō)，叫做虛像。當(dāng)我們看到那些光線的時(shí)候，或不自覺(jué)地認(rèn)為它們?nèi)匀皇茄毓P直的路線傳播。會(huì)看上去比原來(lái)大。1665年，英國(guó)科學(xué)家羅伯特?胡克用他的顯微鏡觀察軟木切片的時(shí)候，驚奇的發(fā)現(xiàn)其中。存在著一個(gè)一個(gè)“單元”結(jié)構(gòu)。胡克把它們稱作“細(xì)胞”。不過(guò)，詹森時(shí)代的復(fù)合式顯微鏡并沒(méi)。有真正顯示出它的威力，它們的放大倍數(shù)低得可憐。Leeuwenhoek，1632-1723）制造的顯微鏡讓人們大開眼界。列文虎克自幼學(xué)習(xí)磨制眼鏡片。他把這個(gè)發(fā)現(xiàn)報(bào)告給了英國(guó)皇家學(xué)會(huì)，引起了一陣轟動(dòng)。們有時(shí)候把列文虎克稱為“顯微鏡之父”，嚴(yán)格的說(shuō)，這不太正確。差和其他光學(xué)誤差的透鏡組。據(jù)說(shuō)，幾百年前列文虎克把他制作顯微鏡的技術(shù)視為秘密。今天，顯微鏡——至少是光
【正文】 called scanning tunneling microscope (STM). This microscope more radical than the electron microscope, it pletely lost the concept of traditional microscope. Obviously, you can39。t see atoms. Because the atoms and macro material is different, it is not smooth, DiLiu disorderly to turn this, more is not Da Vinci, when the model used in painting. Scanning tunneling microscope rely on socalled tunnel effect work. If abandon plex formula and terms, this principle is actually very easy to understand. Tunnel scanning microscope no lens, it USES a root probe. Probe and between objects and voltage. If the object surface very close distance probeabout in distance to the nanometer levelthe tunneling effect can be effective. Electronic will pass through the object and the space between the probe, forming the weak electric current. If the probe and the distance of the object changes, the current will also corresponding change. So, by measuring the current we can know the shape of the object surface, resolution can reach the level of individual atoms. Because the wonderful invention, Binnig and Rohrer won the 1986 Nobel Prize in physics. This years there is a Shared the Nobel Prize for physics, that is the inventor the electron microscope Ruska. It is said that several hundred years agowith the he made microscope singh g technology as a secret. Today, microscopeat least the optical microscope, has bee very mon tools to let us know about this small for himself.
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