A transistor is a semi-conductor device corresponding to a thermionic vacuum triode. It can amplify electric signals and can also be used as an oscillator. In its original form it was invented by John Bardeen and…
The world is in a race to build more and more telescopes to bring more detailed images of the deep Universe. In the middle of
This time James Webb discovered the merger of two massive black holes just 740 million years after the Big Bang. This event is due to the ongoing merger of two galaxies and the supermassive black holes…
A team of astronomers utilizing robotic telescopes around the world has recently spotted a new planet which is Earth-sized and it is orbiting around a cool red dwarf star. This new exoplanet…
We have always been fascinated by the black hole and their existence in the universe. There are huge theories and new research that is being
An observer who departs from an inertial system and then returns after moving relative to that system will always find his or her clocks slow compared with clocks that stayed in the system…
The primary cosmic ray particles mostly protons, some alpha-particles and a few heavier nuclei interact with the nuclei of atmospheric gases giving rise to secondary cosmic rays…
Optical fiber these days have become a major source for the transmission of internet as it is capable of huge data transfer utilizing light in a very short time interval.
Cosmic rays consist of high energy atomic nuclei, mainly. protons reaching our earth from outer space as well as secondary radiation produced by these nuclei in the earth’s atmosphere. Most of these…
Thunderstorms have been defined as storms produced by a cumulonimbus cloud and continually followed with the aid of lightning and thunder. They are normally of brief duration
The light emitted from a laser has a very high degree of coherence and is almost perfectly parallel. Because of the high degree of coherence associated with a laser beam, it finds important applications…
The shortest route for the satellite to take from the launching base to its assigned orbit would be the vertical one. This, however, is not feasible in actual practice for the simple reason…
Neutron is one of the fundamental particles constituting the nuclei of the atoms. It is a neutral particle having a mass 1.00898 atomic mass units – nearly equal to that of the proton. It is a spin 1/2 particle and…
In 1895 Willielm Roentgen found that a highly penetrating radiation of unknown nature is produced when fast electrons impinge on matter. These x-rays were soon found to travel in straight lines…
Suppose two observers O and O’ in the inertial systems S and S’ respectively are at rest with respect to each other. They synchronise their respective clocks and they agree that the time interval…
