Secondary electron images show morphology and topographyof a sample. The more the number of electrons reaching the detector, the brighter the image is. Back scattered electron images show difference in composition - or more exactly, difference in atomic number over a sample. The higher the atomic numbers of the atom, the more backscattered electrons are bounced back, making the image brighter for larger atoms.
A second difference is back scattered electrons are produced by the elastic interaction of the beam electron with nuclei of atoms in the specimen. No energy is lost as it is elastic interaction. On the other hand secondary electrons are produced by inelastic interaction of beam electrons with electrons in the atom rather than the nucleus. Since it is inelastic interaction, there is energy loss.
Electron Carriers.
An electron transport chain (ETC) couples a reaction between an electron donor (such as NADH) and an electron acceptor (such as O2
electron affinity is the negative of electron gain enthalpy. for example, the electron gain enthalpy of fluorine is -328, and electron affinity is 328 which is -(-328)
The kind of bond that results when electron transfer occurs between atoms of two different elements can be considered covalent, polar covalent, or ionic. The type of bond will depend upon the identities of the elements and their electronegativity's.
HINSBERG TEST IS THE DISTINGUISH TEST BETWEEN PRIMARY SECONDARY TERTIARY AMINE
secondary instruments are calibrated.absolute instruments are not calibrated. secondary instruments are used everywhere,ab instru are only in labs or std institutions.
the petrographical interaction between them are at different levels therefore occurring in different wave lengths.
in primary light absorbed by outer molecule while in secondary re-absorbance occurs
broken is 80 percent, scattered is 30 percent
primary lesion is a macule, papule, pustlie, vesicle secondary lesion is a ulcer, crust, scar, skin atrophy, excoriation
The matter in the corona is scattered really thin so it doesn't pass much energy to the objects in it. Think about it as the difference between being hit by an extremely light electron travelling at 10km/s and car at 100km/h. You won't even notice the electron.
what is the similarities between primary and secondary data
what are the diffrence between primary reserve and secondary reserve?
Tertiary structure
High schools are those where classes from class (viii) to class (x) are introduced but in secondary schools the class (xi) and class (xii) are also included.
Yes, for transgressing against the Most High and not keeping His statutes or keeping the covenant made between them, they had to be scattered as a lesson and punishment.
Proteins *have* primary, secondary, tertiary, and quarternary structures. The primary structure is simply the chain of amino acids without any other structure. Secondary structure results from folding of the chain to form rudimentary structures such as alpha helices, beta sheets and turns. Tertiary structure results from the further folding of the protein with secondary structures into different 3D shapes by interactions between different parts of the secondary structure. Quarternary structure results from different proteins with tertiary structures coming together to form a protein complex.