“If all cosmos were the same distance apart, gravity would pull them all in the same direction. They’d remain perfectly aligned, and precisely nothing would happen. Irregularity, imperfection, and lack of order in hydrogen compacts, atoms of gas gravitating away from each other, and compressed temperatures is what created our universe. Perfection in our galaxy simply does not exist. Without imperfection, neither you nor I would exist.” —Into The Universe with Stephen Hawking: ‘The Story of Everything’
Utilize this as an analogy next time attempt to undermine your self-worth caused by fallacious and subjective standards one must meet in order to attain aesthetic appeal. Symmetric cannot be created if its source is asymmetric.
The Google trend for the search query “quadratic formula”.
It repeats in the same pattern every year. Down in summer, up in September, down again in December and up again in spring time before going down again in the summer. And so it goes on forever.
Transverse and Longitudinal waves
The diffeence between a Transverse wave and a Longitudinal wave:
A transverse wave causes particles in a medium to oscillate at right angles to the direction of the wave.
A longitudinal wave causes particles to oscillate parallel to the direction in which the wave is travelling.
How did the moon form? The leading theory is that the Moon resulted from a glancing collision between the young Earth and an object the size of Mars. The above image series is based on several mathematical simulations of the Moon’s origin:
The Moon’s history begins with a collision between a young Earth (larger object) and a Mars-sized planet.
10 minutes: The now-molten mantle layers (gray) of the two planets are mixing together.
1 hour: The iron cores (orange) are melding together – Most of this iron will remain with Earth.
2 hours: Parts of the mantle are spinning off into a swarm of debris.
22 hours: Pieces of debris revolve around Earth, slowly gathering together.
1 week: The growing Moon’s gravity pulls in the remaining debris.
Learn more about Moon rocks and craters.
Erdős’ age anecdote
Paul Erdős, the most prolific mathematician in history, always made jokes about his age. He said for instance that he is 2.5 billion years old, because in his youth the age of the Earth was said to be 2 billion years old and around 1970, it was known to be 4.5 billion years.
This is such a teacher joke