Recent content by ontheroad

You need a material with high heat conductivity, and then a surface treatment that promotes radiation emissivity. For example, emission is proportional to surface area (obviously) so the proper surface roughening improves emissivity. Scratches with a dimension of the wavelength of infrared...

At our size scale, and in our environment, quantum phenomena do not exist: I mean that bullets and baseballs, ocean waves and sound waves do not behave identically to photons. Therefore we have no innate understanding of quantum phenomena. However, photons do display some of the same phenomena...

Using words to describe physical phenomena is the same as model-building; a widely accepted method in science to develop hypotheses and theories. The problem is that we have no words or other constructs to describe physical phenomena that lie outside of our direct experience. It is in these...

Himanshu: The field around the wire is a Biot-Savart field and the ring will be magnetized with this field orientation. However, the Biot-Savart field extends to infinity so there will be a weak field outside of your magnet with the same orientation. The field is weak because of the high...

i would like to discuss this question from the wave hypothesis of light. an analogy. if a photon is a wave like a sound wave, then think of the creation of a photon as the plucking of a string. as the string is plucked a train of waves, sound waves are created. and then the question becomes...