## Cloning Quantum Information

Classical information can be easily cloned. When you xerox something, or forward an email, you are effectively cloning classical information. Quantum information, in contrast, is inherently private. There is no way to create a...

## The physics may be theoretical, but the fun is real–Teaching Physics to Medical Students

I was fortunate enough to teach physics this summer to advanced undergraduates making their way to medical school.  One thing that struck me was how how much teaching has so much in common with consulting. ...

## Alternative explanations for the redshift of galaxies

The ‘Tired  Photons’ Hypothesis The ‘tired photons’ hypothesis is in direct contrast to the Doppler hypothesis. It states that as photons travel through space, they experience collisions with interstellar...

## The Twin Paradox – Once and for All

Check out also – Problems In Advanced Math and Physics and Rare Finds in Special and General Relativity Every science buff has heard of the Twin Paradox. Movies have been made, books have been written, plots and sub-plots all...

## What about accelerating frames of reference?

If a woman is standing in an elevator, she feels a force of gravity pushing her against the floor. As the elevator accelerates upwards, this force increases.  She still feels as if a ‘gravitational’ force has increased...

## Is zero point energy exploitable?

The short answer is ‘No’. If you think about what the zero-point energy represents, it is the lowest POSSIBLE energy state of a system. For us to extract any energy out of this system would leave it in an even lower energy...

## Teaching Relativity

Galilean Transformation – v’ = v +- V –  cannot be applied to light If (x1 , t1) and (x2,t2) are two events in K, and (x1’,t1’) and (x2’,t2’) are their co-ordinates in K’, then (x2 –x1) / (t2 –...

## Understanding Quantum Physics–as Intuitively as Possible

Several classical, common sense notions like the momentum of a  particle hold no meaning in the quantum realm. Momentum and velocities are no longer ‘material’ aspects of a microscopic particle; they are rather...