[揽瓜阁精读] 176.Telescope

一只Irene

同意！               

一只Irene

176 2. telescope
TW: microscope
1.kw1: 难题
aw-: cumbersome, often destructive methods
aw-: familiar light microscope
2.kw2: new microscopes
aw+: open the realm
aw+: achievement
aw-: Abbe-limitation
x: 作用-shapes, properties, variations at a higher resolution
y: 今昔对比Abbe-the microscope more than 100 years ago-obscures half the wavelength
3.kw3: new microscope-scanning tunnel microscope
aw+: overcome barrier
x: principle
y: resolution is limited by the size of the hole
z: make images-make superresolving images smaller than half a wavelength
4.kw4: technology with needed precision did not exist& Ash adopted strategy
x: two-hundredth of a wavelength
5.kw5: with precision needed available
aw+: piezoelectric
x: piezoelectric
6.kw6: in STM“ aperture”-probe
x: piezoelectric
y: current, gap
7.kw7: x and y piezoelectric controls
x: probe maintained a steady height
y: probe moves up and down

总结：提出问题-解决问题（倒序，先讲有new microscope，再讲microscope一步步发展到new microscope）。