Recent content by lanman

Not sure where I heard that...

Google "the cold/hot grille illusion." It is an interesting tactile hallucination. I think there's a wikipedia on it.

I have a Celestron C4.5 reflector telescope, and a Minolta XR-5 (I think) camera. I got the parts to connect the two, but found that I couldn't get it to focus. To make the connection, first the lens assembly must be removed from the camera. How can it be focused once it's on the telescope?

The speed of lights is an absolute maximum to speed, because it is the rate at which time flows. The digits it is expressed as are based on our units of measurement.

Light is another name for electromagnetic radiation, which is the transmission of energy. It is energy. Einstein's equation shows that energy and matter are the same concept, so in a way, it is.

(Sorry rewebster and genneth, but I'm going to use "is" in this, because the easiest way to describe the photon model of light is to say "a photon is"). The photon is a single particle in the particle model for light. Before quantum theory, and the concept of wave-particle duality, the...

If you can assume the surface to be perfectly frictionless, then you can assume the human body to be perfectly coordinated and balanced too. It would have to aim its force down perfectly perpendicular to the surface, so that no component of it points horizontally, or somehow make sure that all...

I have recently been studying Gregory Chaitin's "algorithmic information theory" for a school project. It describes the complexity of mathematical objects by the size of the smallest Turing machine program capable of computing them (in bits). It also defines a "random" object as one with an...