The End of the Universe and the Big Crunch Theory


The likelihood of a Big Crunch in which the universe expands to the point that it then collapses inward upon itself is not very probable as mathematical calculations demonstrate that there simply isn’t enough mass in the entire universe to be able to revert into into an enormous compaction. The idea of the universe folding in upon itself can be visualized by imagining a person throwing a ball in the air. The Earth has enough mass to bring a thrown ball back down to the ground but if thrown faster than the speed of escape velocity which is 11.186 kilometers per second, a thrown ball would never come back down, in fact, it would travel an infinite distance over an infinite timespan before the Earth mathematically had enough time and mass to pull the ball back to its starting position. The universe is represented by the Earth in that it acts as a force upon other objects and the ball represents all matter throughout the universe in this thought experiment

The Reason Why Underground Caves Naturally Form


Cave systems form when acidic water etches its way through rock. Rainwater becomes acidic as it takes in carbon dioxide and groundwater can become acidic due to the acids found in nearby soil. Water causes existing cracks within the rock to widen into passages which the water flows through to create even wider channels. Over time caverns begin to form as the rock weakens and falls

The Physics of the Pac-Man Universe


The game of Pac-Man allows players to exit the world on one side, and re-enter upon a completely different side without delay. Pac-Man’s universe appears to be a flat, two dimensional, rectangular shape, but in reality it must be cylindrical like a pipe, only with the 2 ends of the pipe touching, making Pac-Man’s universe actually in the shape of a donut

Skyscraper Preparations​ in China for Typhoons​


A level 16 typhoon is capable of dumping up to 7” of rain per hour. Because of this, all skyscrapers on the Chinese coastline (e.g. Shanghai, China, Hong Kong, China, Macau, China etc.) must have specially trained workers dangle off of the side of the building from support lines, with high pressure water hoses. These workers spray random windows for 5 minutes as inspectors scrutinize the windows for leaks

Robert Goddard’s Liquid Fueled Rocket Concept


Robert Goddard devised the idea of liquid kerosene and liquid oxygen being mixed together to create a fierce, but most importantly, a controllable flame for propulsion. When kerosine reacts with oxygen, the result is an incredibly hot, rapidly expanding gas which when channeled through a nozzle, creates enormous thrust. On March 16, 1926, Goddard launched the world’s first liquid fuel rocket bearing this concept. This rocket did not travel fast nor far but it did demonstrate a proof of concept making space flight theoretically possible for the first time in human history