Lasers-An Introduction
The laser is an acronym for Light Amplification by Stimulated Emission of Radiation. The laser has been invented and developed in 1959 and 1960. In the laser, the maser principle has been extended to optical or visible light frequencies of 10 1 4 to 10 1 5 cycle/s. Laser may be called "op..
Organic Food
With world wide awareness about dangers of persisting pesticides in food crops, enormous interest is shown in food grown on organic farming principles. Such food is called organic food . Organic farming is a method of farming wherein synthetic chemical is not used in any form - ..
Vernier Calliper
The meter scale enables us to measure the length to the nearest millimeter only. Engineers and scientists need to measure much smaller distances accurately. For this a special type of scale called Vernier scale is used. Vernier Calliper The Vernier scale consists of a main scale graduated..
The meter scale enables us to measure the length to the nearest millimeter only. Engineers and scientists need to measure much smaller distances accurately. For this a special type of scale called Vernier scale is used. Vernier Calliper The Vernier scale consists of a main scale graduated..Question 15
Question: How many three digit numbers are there with distinct digits with each digit even, i) with 0 and ii) without 0? Answer: Here we are required to form three-digit numbers with distinct each digit even. The even digits are 0, 2, 4, 6, and 8. The digits used are 0, 2, ..
Question: How many three digit numbers are there with distinct digits with each digit even, i) with 0 and ii) without 0? Answer: Here we are required to form three-digit numbers with distinct each digit even. The even digits are 0, 2, 4, 6, and 8. The digits used are 0, 2, ..Reasons for Mendel's Success
Reasons for Mendel's Success - Many scientists earlier to the period of Mendel had attempted breeding experiments in both plants and animals. However, most of them failed to arrive at any specific conclusions or principles to explain the pattern of inheritance. In fact, many of these scie..
Applications of Doppler Effect
The Doppler effect provides a convenient means of tracking a satellite that is emitting a radio signal of constant frequency. The frequency of the signal received on the Earth changes as the satellite is passing. If the received signal is combined with a constant signal generated in the receiver ..
Measurements of Specific Conductivity (k)
Resistance is measured using the principle of a wheat stone bridge. It consists of four arms. fig 5.4 - Principle of D.C Wheatstone bridge method R 1 - Variable resistance R 2 - Unknown resistance G - Galvanometer. Knowing R 1 , R 3 and R..
Resistance is measured using the principle of a wheat stone bridge. It consists of four arms. fig 5.4 - Principle of D.C Wheatstone bridge method R 1 - Variable resistance R 2 - Unknown resistance G - Galvanometer. Knowing R 1 , R 3 and R..Advantages and Disadvantages of Echoes
Echoes can be useful or a nuisance. In a concert hall, echoes can ruin a performance if the walls and ceiling are not properly designed. If the walls are too hard, or too flat, they make good reflecting surfaces for the sound waves. Echoes can be used to give vital information...
Renal Failure and Technology for Survival
The kidney slowly deteriorates and stops functioning. The symptoms are water retention, acidosis, anaemia and increase in blood urea level. You have learnt how important the kidneys are for survival. Though kidney failure is not common, sometimes kidney infection, injury to kidneys or restricted ..
The kidney slowly deteriorates and stops functioning. The symptoms are water retention, acidosis, anaemia and increase in blood urea level. You have learnt how important the kidneys are for survival. Though kidney failure is not common, sometimes kidney infection, injury to kidneys or restricted ..Zone refining method
When metals are required in a ultra pure state, the zone refining method is used. The principle-employed states that the impurities, which lower the melting point of a metal remain preferentially dissolved in the liquid phase and purer metal will emerge in the solid phase. In a..
When metals are required in a ultra pure state, the zone refining method is used. The principle-employed states that the impurities, which lower the melting point of a metal remain preferentially dissolved in the liquid phase and purer metal will emerge in the solid phase. In a..See what our Users say :
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