WebDec 2, 2006 · Without gravity, the water in oceans, rivers and lakes would disappear, leaving Earth with no water supply. Photo courtesy USGS. But let's ignore the physics and imagine that, one day, the planet's gravity … WebApr 24, 2010 · These discussions about whether acceleration in flat spacetime is gravity started already in 2003 on this forum. It is all arguments about terminology and not physics. A waste of time if you ask me. :smile: Hi MeJennifer Let me give you an example of why this is not a waste of time. If...
What Is Gravity? NASA Space Place – NASA Science for Kids
WebJun 21, 2024 · The original question was about whether time can exist without gravity, and most of the answers say yes, time can exist even without gravity. Now I am asking the opposite, whether we can think of gravity in terms of a 3D space, without the … WebFeb 7, 2024 · We can rearrange E = m c 2 to be m = E c 2. So each photon has a relativistic mass of 2.2 * 10^-26 kilograms. That means it creates the same gravitational field that a particle of that mass would create. So to create earth-like gravity, you need to match 6*10^24 kg. That will take about 2.73*10^52 particles. bissell fiber cleansing formula sds
What If There Were No Gravity? - Scientific American
WebJan 2, 2014 · 6. Think of the uncertainty principle. According the the uncertainty principle, over a period of time energy fluctuates and combining this notion with relativity, this translates to virtual particles popping in and out of existence from the 'nothingness' of the vacuum. If we have a quantum theory of gravity (which we don't yet), space and time ... Web1. Gravity acts between any two objects, magnetism only between some. 2. Gravity is always attractive, magnetism is sometimes repulsive. 3. At large distances the gravitational force falls off inversely with the distance squared. The magnetic force falls off at large distances at least as fast as inversely with the distance to the fourth power. 4. WebMar 2, 2016 · Gravity is the curvature of spacetime. The equivalence principle tells us that the effects of gravity and acceleration are indistinguishable. In thinking about the example of the cylindrical ride, we … darshan covers