For gravity does vary across the earth, meaning Newton’s apple has a slightly different weight in various other parts of the world and falls at slightly different speeds. That’s due to a combination of four factors.
First, there’s a latitudinal effect. The earth is not perfectly round: It’s flatter nearer to (and flattest at) the poles and bulges more towards (and most along) the equator.
Secondly, there’s a rotational effect. That difference in gravity between the poles and the equator is only partly due to gravity itself; it’s also caused by the fact that the earth spins faster at the equator.
Then there’s an altitudinal effect. Earth’s gravitational pull depends on your distance from its center. Gravity diminishes with altitude—but again, with fairly limited effect. If you’re 16,400 feet (5 km) up a mountain, you weigh 99.84% of what the scales would say at sea level.
Fourth differentiator: the tidal pull of the moon and sun. Although this has visible, repetitive and significant effects—the ebb and flow of sea levels—the variations this causes in the earth’s gravity are very small indeed.
While the first four factors can be compensated for mathematically, it’s the local geology which produces random gravity anomalies of the kind mapped here.
The Anglo-Zanzibar War, fought between the United Kingdom and the Sultanate of Zanzibar on August 27, 1896, holds the record for the shortest war in history. It lasted only 38 minutes.
Zátopek developed his own training methods to give himself an edge.1 He’d run as fast as he could holding his breath, take a few huffs and puffs and then do it all again. It was an extreme version of Buteyko’s methods, but Zátopek didn’t call it Voluntary Elimination of Deep Breathing. Nobody did. It would become known as hypoventilation training. Hypo, which comes from the Greek for “under” (as in hypodermic needle), is the opposite of hyper, meaning “over.” The concept of hypoventilation training was to breathe less. Over the years, Zátopek’s approach was widely derided and mocked, but he ignored the critics.2 At the 1952 Olympics, he won gold in the 5,000 and 10,000 meters. On the heels of his success, he decided to compete in the marathon, an event he had neither trained for nor run in his life. He won gold. Zátopek would claim 18 world records, four Olympic golds and a silver over his career. He would later be named the “Greatest Runner of All Time” by Runner’s World magazine.3 “He does everything wrong but win,” said Larry Snyder, a track coach at Ohio State at the time.
Source: "Breath: Improve your health and wellbeing by discovering the lost art of breathing" by James Nestor
Colors are an illusion created by our brains to help us make sense of the world around us.
Colors are not properties of objects themselves but are created by our brains. When light hits an object, it reflects certain wavelengths. Our eyes detect these wavelengths and send signals to our brain, which interprets them as colors. So, what we perceive as "red" or "blue" is actually our brain's way of interpreting different wavelengths of light. If we take an example from nature, you may wonder why deer seem so stupid that they can't see a tiger hiding in the grass. But in reality, their eyes perceive just normal shades of green, and the tiger's stripes blend in perfectly, making it much harder for them to spot.
I'm struggling to grasp your conclusion that colors are nonexistent. It would be more precise to say that color perception is contingent upon the presence of light.
If color perception were absent, visual experience would be limited to variations in brightness, resulting in shades of gray, ranging from black to white.
Newton's Apples (and Your) weight is more in Illinois than in Indiana
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