New address of Earth
It seems like a completely new definition of a supercluster. Previously Milky Way was placed in the Virgo Supercluster. Tully and colleagues said that it is the appendage of the…
Wormholes
Our universe is mysterious it is very big in size and it is expanding and spreading out. After the sun our (earth) closest star is Proxima Century (4.22 light year…
Indian Standard Time
Creating awareness- Neha Batra Measurement of time has always been a challenge to scientists and engineers. And maintaining a fixed standard has always been essential for almost every aspect of…
Waves
According to the definition of traveling wave, the wave function should be continuous, single-valued, sinusoidal (harmonic) and finite at every point. As the given function is neither harmonic nor finite,…
Units and Measurement
In physics and metrology, units are standards for measurement of physical quantities which facilitates the reproducibility of experimental results. Scientific systems of units were developed from weights and measures used…
Motion in a plane
According to Stefan, we can order events in time and there is a sense of time, distinguishing past, present and future. Is, therefore, time a vector? Similarly current has magnitude…
Structure of atom
Edwin was observing a yellow candle flame, his partner Harry claims that the light from the flame originates from excited sodium atoms in the flame. Edwin disagrees with Harry. According…
Electromagnetic waves
James science teacher told him that space is full of vacuum. He asked his teacher than how light rays travel so long distances from stars and reach earth’s surface. Does…
Kinetic Theory of gases
Kinetic theory of gases Question: David told John that molecular speeds are comparable with his rifle bullet. John asked David if molecular speed comparable with rifle bullet speed then why…