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How we measure the efficiency of light sources in easy way?
I don't think there is an "easy way", not if you mean "home-made easy". You need devices to measure the amount of light produced (in lumen), and to measure the amount of power used. Then you would have to divide the first by the second, to obtain lumen/watt.
How did you lessen the pollution?
To lesen the pollution is not that easy. First, you need to turn off the lights when you are not in the room. You may also want to chang the regular light blubs to the recycle bulbs that way you may lessen the light pollution. If you want to lessen the air pollution, then you may drive less cars, and not smoke. The only way to make the lessen the noise pollution, is that to keep the voice softer.
How easy is it to die from water pollution?
water pollution can kill you very easiley and animals too!
In very easy language what is pollution?
Dirt and chemicals in the air
What are the causes n preventive measures of pollution?
easy because of people.
Lignite is easy to mine but causes heavy air pollution?
true
Why did early experimental attempts to measure the speed of light fail?
If you want to measure the speed of something, you first have to recall that speed is (distance traveled) divided by (time to travel the distance), and then you realize that you have to measure the distance it travels and the time it takes to travel that distance. If it happens to be the speed of light, then you immediately have a serious problem. The speed of light is so great that ... -- If you pick a distance that's easy to measure, then the time is impossibly short. For example, if you pick ten miles, then you have to accurately measure 0.00005368 of one second, which is pretty tough. -- If you pick a time that's easy to measure, then the distance is ridiculously long. For example, if you pick 0.1 second, then you have to accurately measure 18,628.2 miles, which is enormously tough. Both of these methods are theoretically and technically perfect, and completely impossible to actually use for the speed of light. You have to invent whole new clever ways to measure speed.
How can we save a river from water pollution?
Easy. By stopping to put polluting stuff in it.
Why is it point source is considered as the most easy to deal with compared to non-point source?
This is because the sources of pollution are easily identified and as such the pollutants or contaminants can be isolated,monitered and controlled.But the major set back or disadvantage of this control measure is that it is expensive.
What is Easy definition of pollution?
an unwanted change in the environment caused by substances or forms of energy
What is the difference between a light year and a year?
A light year is actually a measure of distance. it's the distance that light travels in one earth-year. A year is a measurement of time equal to the amount of time that it takes the earth to go around the sun once.
How can you measure the pH of an unknown liquid?
It is very easy to measure pH using a pH meter.
