The main reasons for testing light intensity are to ensure that minimum standards of illumination are being met, and to determine appropriate exposure times in photography and cinematography.
Four commonly encountered situations are set out,from which i will describe on way to test light intensity;
<u>WEATHER MONITORING:
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While many light meters are configured for incandescent light they are still useful for providing comparisons outdoors. A meter could for example produce records showing the difference in intensity between the summer and winter solstice. Mapping light intensities in an area designated for solar arrays could help determine the optimal location for each panel. Those involved in agriculture may benefit from identifying areas of lower light intensity within a greenhouse.
The group there in is Tertiary Consumer.☺
Answer:
What little is known is that the Earth's magnetic field creates the so-called A "magnetic shield" that protects against other dangerous forms of radiation, namely cosmic rays and solar wind.
While there is no danger of losing the Earth's gravitational field, the Earth's magnetic field is declining faster than any other geophysical phenomenon. This continuous loss of the Earth's magnetic field, and the associated increase in harmful radiation, are beyond human control.
In addition to the growing problems of Earth's environment, there are other conclusions that can be drawn from the weakening of its magnetic field:
1) C-14 carbon dating should be reconsidered;
2) There is an age restriction for both the Earth's magnetic field and the Earth itself.
Explanation:
Electromagnetism is a branch of classical physics that investigates the causes and interconnections of electrical and magnetic phenomena, explains the light phenomena and laws of optics, and all other types of electromagnetic waves.
The development of electromagnetism began in the early 19th century with the experiments of HC Ørsted and M. Faraday. reached in A. Einstein's special theory of relativity.
On a global scale, two important force fields connect to planet Earth: Earth's gravitational field and Earth's magnetic field. The gravitational field draws us towards the earth, keeping us from flying into space at Earth's rotation. It also prevents the atmosphere from leaving our planet. The atmosphere, on the other hand, provides protection against some types of cosmic healing. For example, ozone in the atmosphere protects from ultraviolet rays, a deadly form of radiation.
Only 10% of the biomass from each trophic level is passed to the next one as energy is used for other reasons like movement and staying warm so not all the energy in the animal/plant eaten is going to be passed to the animal eating it