# Physics

Understanding density and why objects float on water
By: Jim Kerrigan
Fresh water weighs 62 pounds a cubic foot. This is the central reason that things float. Any three dimensional object will have volume. The thinner the walls of the object and the more empty or hollow it is, the lighter it is and the better...
 By: Betty Carew Ice floats since it goes to the very opposite of thermodynamics. The belief of solids sinking to the bottom is the norm but ice doesn’t do that even though it appears to be a solid. Instead ice floats on top of the water instead...
Why and how absolute zero is -273.15 Celsius
By: Armanpreet Pannu
Absolute zero is the lowest possible temperature in this universe. You can not get lower than absolute zero which is -273.15 Celsius or 0 Kelvin. To understand why this is you first need to know how temperature works. Temperature is just the movement of...
By: Lenna Gonya
For anything to float, it has to be less dense than the medium it is in, and, it has to be able to displace an amount of fluid equal to it’s own weight.Water is one of the few substances that actually loses density...
Why does ice float?
By: Becky Robbins
With winter upon us, snow and ice illuminate the world in a winter wonderland. As children skate across that frozen pond, the question comes to mind of why ice floats. After all, it is just water in another form. The reason that ice floats can...
Book reviews: Relativity, The Special and the General Theory by Albert Einstein
By: Dyana Hepburn
RELATIVITY The Special and the General Theory, (C)1961 by the Estate of Albert Einstein Authorized translation by Robert W. Lawson, University of Sheffield RELATIVITY is a classic of scientific literature. I now appreciate Albert Einstein much more than before after reading his own writings. I...
Why and how absolute zero is -273.15 Celsius
By: Brian Dodson
What a strange notion – that there is a temperature below which it does not make sense to talk about temperature. Why can a body not have lower and lower temperature, and what sets the temperature we call ‘absolute zero’? This is a story...
Calabi-Yau spaces and their affect on reality
By: Brian Dodson
Calabi-Yau spaces have no effect on reality. However, they may shed some light on the traditional desire of humans to understand reality. Calabi-Yau spaces are mathematical constructs which seem to have significant importance to superstring theory, which is one of the currently popular theoretical models...
Time Travel might Work
By: Brian Dodson
Is time travel theoretically feasible? In a trivial sense it is clear that time travel is possible – all of us are currently travelling into the future at a rate of one day per day. The real question here is can we change the rate...
By: Lee Petersen
The equation E = mc^2 is a pretty important equation in physics. Not many people would learn about it in a general physics class in high school or even college general physics class. However, it is probably the most known equation in the world. E...

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