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Resolving Power
Resolving Power - The ability of the instrument to resolve the images of two point objects lying close to each other. Due to the wave nature of light each point object produces its own diffraction pattern, which overlap, and the image can no longer be identified. Resolving power..
Resolving Power - The ability of the instrument to resolve the images of two point objects lying close to each other. Due to the wave nature of light each point object produces its own diffraction pattern, which overlap, and the image can no longer be identified. Resolving power..External Modem
This is the simplest type of modem to install because you don't have to open the computer. External modems have their own power supply and connect with a cable to a computer's serial port. The telephone line plugs into a socket on the rear panel of the modem. Because external modems have..
Speciation (origin of new species)
A species is a group of similar organisms, which can breed among themselves producing fertile offsprings. The members of a species not only share a common gene pool, but also share a common ancestry. Origin of a new species from the existing one, is called speciation. It is an i..
Comparison Between Single, Double and Triple Covalent Bonds
Single, double and triple covalent bonds differ from each other in the following ways. Single bond is formed by the sharing of one electron pair, (two electrons); a double bond is formed by the sharing of two electron pairs, (four electrons), whereas a triple bond involves ..
The Asian Brown Haze
A report by scientists at the United Nations Environment Program (UNEP) said the Asian Brown haze is a three kilometer deep blanket of pollution in the sky, which stretches across South Asia, and has been caused by the spectacular economic development experienced by this part of the world. The haz..
Non-Polar Molecules
When diatomic molecules are formed from identical atoms, the electrons forming the bonds are shared equally between the atoms e.g.,H 2 , N 2 , O 2 , Cl 2 etc. Such molecules are termed as non-polar as there is no separation of charges. When compounds are formed between two di..
Green Chemistry
>Green chemistry encompasses all aspects and types of chemical process including synthesis, catalysis, analysis, monitoring, separations and reaction conditions, which reduce or eliminate the use or generation of hazardous substances. Green chemistry technologies can be categorized into o..
Block and Tackle
Instead of using separate pulleys a more practical way is to use a number of pulleys and to pass a continuous rope around them. This is a pulley system in which each block contains one or more pulleys mounted on the same axle as shown in figure (a) below. T = E. Both the ropes shareh..
Instead of using separate pulleys a more practical way is to use a number of pulleys and to pass a continuous rope around them. This is a pulley system in which each block contains one or more pulleys mounted on the same axle as shown in figure (a) below. T = E. Both the ropes shareh..Question 4
. Plant respiration and the decomposition of organic matter release more than 10 times the CO 2 released by human activities; but these releases have generally been in balance during the centuries leading up to the industrial revolution with carbon dioxide absorbed by terrestrial vegetation and the..
Mixtures
A mixture is a combination of two or more elements or compounds in any proportion so that the components do not lose their identity. Air is an example of a mixture (several gases mix to form air). Mixtures are of two types, homogeneous and heterogeneous. Homogeneous mixtures have the same compositi..
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