To understand operation system of SEM
To acknowledge of D.O.F and Resolution
To find what becomes differ by Aperture Size
Aperture
D.O.F / Resolution
Convergence angle
Probe current
Probe diameter
Change Aperture
Change Magnification
How to change D.O.F
How to change resolution
An aperture is a hole or an entrance which is passing light.
Controlling aperture
Ⅰ. 개요
화석은 퇴적암 지층에 보존되어 있는 생물의 유해나 자취를 말한다. 생물이 죽어서 다 썩기 전에 화석 형상이 만들어져야 하므로, 화석은 홍수에 의하여 물이 진흙이나 모래를 쓸고 밀어내려 갈 때 특히 많이 형성된다. 홍수로 인한 생물의 시체를 포함한 퇴적층은 적당한 압력과 온도 등의
Infrared Absorption Spectroscopy
□실험목적
여러 개의 작용기를 가진 미지 시료를 Infrared Absorption Spectroscopy를 이용하여 정성분석을 할 수 있다.
□이론
※Vibration of Molecule
■Dipole change during vibrations and rotation
적외선은 자외선 가시선에서 거론된 전자전이를 일으킬 정도로 충분한 큰
Gattaca
A Screen Play
by Andrew M. Niccol
FADE IN
A white title appears on a black screen.
"As night-fall does not come at once, neither
does oppression...It is in such twilight that
we all must be aware of change in the air
- however slight - lest we become victims of
the darkness."
Justice William O. Douglas
The title fades off, replaced by a second title.
"I not only think that we will tamper
aperture?
The pinhole focuses the light.
You have that flashlight?
-- Yah.
Take it down
I would love to get up there.
I do not know, man.
I could smell it down the hallway.
Did you see they called Stan Aubray in?
Nope. Hey, hes on one of my classes
I thought they retired him already
God...
-- Wanna buy you breakfast.
-- No, Im going straight to bed.
I think Im getting a cold.
OK.
What are you doi