Vibration and Resonance
Monaural beats occur in the open air and external to the ears. For example, when two guitar strings of slightly different frequencies are plucked simultaneously. Monaural beats strike the ear as beats and therefore excite the thalamus, an action crucial for entrainment. Binaural beats played through loudspeakers become monaural beats.





Lunar Eclipse December 2010: Event Seen In Hawaii This Year



Though the sun's diameter is about 400 times greater than that of the moon, the sun is also about 400x's farther from Earth. That's why these two appear the same size.
what a coincidence?

Einstein called one of these coincidences 'the greatest coincidence in the Universe", namely the fact that the moon completely covers the sun during a solar eclipse.

one of the latest theories
David Cumming added: "This discovery reinforces the recently developed theorising by many physicists and statisticians that we live in a simulated world. We may well be in some sort of vast advanced computer simulation, a constructed world, and not know it."