# Physics

Why and how absolute zero is -273.15 Celsius
By: Kevin Wijaya
First of all, there must be a mistake in the title. Absolute Zero is not -273.15 Kelvin, but it is -273.15 Celcius. Now, you may wonder, how do people get that number? What is actually the meaning of Absolute Zero? In order to...
 Considering the effects of ultraviolet radiation By: James Felice Ultraviolet Radiation and You!Ultraviolet radiation is everywhere, from the pools we swim in; to the sun that bathes us in it. After Violet light we get into the Ultraviolet, or greater than Violet, light spectrums. From the tan you receive from the sun, or...
By: Paul Manalo
The speed of sound is the distance travelled by a point on a sound wave per unit of time (Doshi, 2007). As people may have observed, sound travels faster in the ground than through air. This is why horseback riders can determine if there is...
Factors that affect the speed of sound
As a physical phenomenon, sound is a waveform propagated by the collisions of particles in the medium through which it travels. It is little wonder then that the speed of sound should depend mainly on the properties of the medium itself. Some of these properties...
By: John Traveler
The world of traditional Newtonian physics deals with energy and matter, and the basic forces that hold the universe together on a cosmic scale, gravity, the electromagnetic force and the weak and strong nuclear forces. Quantum mechanics deals with forces, energy and matter too, but...
By: Nish Laverz
Stephen Hawking once said "If black holes can be manipulated or manufactured in the lab to act as a time machine, then surely someone, somewhere in the universe must have developed the capability by now? Or at least, one day, someone will. So-then where are...
By: Fayyaz Khan
It is a tribute to Isaac Newton's genius that he summarized the physical principles of motion of bodies in three succinct laws, which we will elucidate here. Before we explain the actual laws themselves, it is crucial to understand the physical concept of a force...
An explanation of Newton's three laws of motion
By: Elaine Sihera
Born in 1642, at a time of great political turmoil in the UK, Sir Isaac Newton was a British scientist whom many regard as the greatest physicist of all time perhaps because of the tremendous effect that knowledge of his three laws have had on...
By: Steve Healey - 335440
"Let's get physical, physical, I wanna get physical, let's get into physical"- Olivia Newton JohnI'm not much of a gambler. In fact, on a recent trip to Las Vegas, I was actually sitting in my room watching a Nova special on PBS about physics. It...
By: Ogboli Samuel
In so many state and institutions in the world today so many people say that this topic is toxic in nature and by so doing can not do any thing about it.It is a very complex topic, but not that hard to be put...

1 3 4 5 6 7 108