Have you ever wondered why a ball bounces back when you drop it on the ground? Newton’s Third Law of Motion gives us the answer: Every action has an equal and opposite reaction. When the ball is released by you, it is pulled by gravity and starts going faster and faster.When it reaches the ground,… Continue reading Why does a ball bounce off the ground?
BUOYANCY Archimedes of Syracuse was a smart man in the court of the king of Syracuse. Once, the king posed a problem to Archimedes. The king had been given a crown by an artisan who claimed that it was made of pure gold. The king did not trust this artisan and asked Archimedes to find… Continue reading Archimedes Principle
Physics is the branch of science concerned with the properties of matter and energy. Physics includes various subjects like heat, light, mechanism, sound, electricity, magnetism and structure of atoms. The purpose of physics is to find ways to explain everything – from the tiniest particles to the largest stars, galaxies and objects known to man.… Continue reading What Is Physics?
Q: How many general-relativity theorists does it take to change a light bulb? A: Two. One to hold the bulb and one to rotate space. This one is based on Einstein’s General Relativity. Before Einstein, physicists tried to explain motion and everything in relation to a certain point of view, called the Frame of Reference.… Continue reading General Relativity and light bulbs
Have you ever wondered why, when an ambulance or any car with a siren passes you, the sound of the siren seems to first get higher in tone as it approaches and lower once it moves away? This is explained by the Doppler Effect: The Doppler effect (or Doppler shift) is the change in frequency… Continue reading Doppler Effect
The chicken and the road joke is one of the oldest. However, very few people know that it actually dates back to the days of Isaac Newton, although it has changed somewhat over the years. Newton, in fact, used it on his colleagues at Cambridge University. Here is a reenactment of a conversation that took… Continue reading Cross Roads Chicken
One day, Einstein, Newton, Pascal, and Heisenberg met up to play a game of hide and seek. While Einstein counted, Pascal ran away and hid, but Newton stood right in front of Einstein and drew a one meter by one meter square on the floor around himself. When Einstein opened his eyes, he immediately saw… Continue reading Hide and Seek