The doppler effect changes the wavelength of the light emitted, depending upon whether source is moving away or coming towards the detector. Doppler effect in light is actually a relativistic effect (caused due to relativistic time dilaton and can be explained by special theory of relativity) but somewhat similar to the one which happens in sound waves. This effect has nothing to do with the bending in spacetime. When the source is moving away from the detector, the wavelength of the light emitted from the source appears to be increased as seen by the detector (think of a wave being stretched), as a result the frequency decreases (since, speed of light is constant in all frames). Due to this decrease in frequency the light emitted from the source appears more red (since red color is on low frequency side in the electromagnetic spectrum) compared to the situation when source was at rest. Vice versa for the source moving towards the detector This shift in frequency is also known as doppler shift. The shift in frequency when the source is moving away is known as redshift and the opposite one is known as blueshift.
For climate of a place in order to be simplified and organized and generalized needs to be classified into the understandable forms as accordance to the climatic data obtained for the diverse classification and a compressive view of the climate and a broadly distributed over the earth is represented by the Koppen's climatic classification wee each climate is diverse and given different type of names and numbers.
<u>Such as those of the A (tropical), the B (dry), and the C (temperate), D (continental), and the E (polar). On the basis of the seasonal rainfall and the type of vegetation found in various regions on the earth.</u>
The lowlands west of Australia´s eatern mountain range are drained by the Murray-Darling River system, with its main headwaters in the <em>Great Artesian Basin.</em>
