What is Gaia hypothesis
Gaia hypothesis (J. Lovelock, 1969): The thought that the Earth as an entire must be regarded as a living organism and that biological procedures stabilize the atmosphere.
Fermat's principle: principle of least time (P. de Fermat): The principle, put onward by P. de Fermat that explains the path taken by a ray of light among any two points in a system is for all time the path which takes the least time.
why quantum physics is studied? give me some of topics
Write down any two elementary particles that have nearly infinite life time?
Planck equation: The quantum mechanical equation associating to the energy of a photon E to its frequency nu: E = h nu.
A thermocouple of K type is suddenly exposed to air with temperature of 1273K, Initial temperature was 293 K. Calculate the time needed for the thermocouple read the temperature with accuracy of better that 99%. Ignore radiation and conduction. The measuring element has a ball shape of diameter o
Cadmium rods are given in a nuclear reactor. Explain why?
What do you mean by communication? Illustrate in brief.
Explain what does held the nucleons altogether in a nucleus?
Describe the fundamental principles of the regulation? Briefly describe the principles?
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