1、The Bohr radius, for hydrogen is 0.529 angstroms.
2、This effect is particularly important for leds since the emitted spectral width is several hundred angstroms.
3、The new structure is determined at a resolution of 4.15 angstroms, whereas researchers would normally aim for better than 4.
4、Electromagnetic radiation that has a wavelength in the range from about4, 000(violet) to about7, 700(red) angstroms and may be perceived by the normal unaided human eye.
5、It shows that the mica particle is wrapped by a dozens-of-angstroms-thick film, the chemical structure of which is the same as that polymerized in the absence of mica.
