-
-
-------------------- 2295 - Time is What God Created
-
- Time is a finite duration that creates intervals between events. I guess, if events did not happen there would be no time. Science defines time as what clocks measure.
-
- It is the number of ticks on a clock. A clock can be anything you want that has periodic ticks, your heart beat, Earth’s rotation, Quasar’s rotation, Quartz resonance, a pendulum, or atomic vibrations.
-
- What we observe as time is one physical variable, the moving of hands of a clock as a function of other physical variables, the race car moving around the track.
-
- Is time a fundamental property in the Universe, or is it just the macroscopic appearance of things? What happens to time in the microscopic world?
-
- In 1905 Einstein changed our whole concept of space and time with his Theory of Relativity. Before then space and time were constant and absolute. After then space and time were variable and relative to an observer’s motion.
-
- What physicists need is a similar modified version of Quantum Mechanics that describes space and time. To be a quantum space and time must not be continuous but rather made up of discrete fragments, or quanta. The same analogy as light being bundles of energy, quanta called photons.
-
- In Quantum Mechanics all particles of matter and energy can also be describes as waves. This is called the Wave-Particle Duality. Waves have the unusual property that they can exist in the same location at the same time. Particles on the other hand can not share the same space at the same time.
-
- If time is quanta it could exist as waves piled up on top of each other in a space that does not exist. This appears to be an impossible situation. Time may not even exist at the most fundamental level of physical reality.
-
- The smallest unit of time is thought to be the Planck Time of 10^-43 seconds. That is:
-
----------------- 0.000,000,000,000,000,000,000,000,000,000,000,000,000,0001 seconds.
-
- It is the time it takes a photon traveling at the speed of light to cross the distance of a Planck Length, 4*10^-35 meters.
-
- Planck Time is derived from the fundamental constants of Gravity, Planck’s Constant, and the Speed of light.
-
------------------------ Planck Time^2 = G*h*c^5
-
----------------------- G = 6.67*10^-11 meters^3/(kilograms*seconds^2)
-
----------------------- h = 6.6*10^-34 kilogram*meter^2/seconds
-
----------------------- c = 3*10^8 meters / second
-
-------------------------- Planck Length^2 = G * h / c^3
-
- Time is measured in seconds which is defined as the duration it takes hot cesium atoms to vibrate exactly 9,192,631,770 times. These are the ticks in an atomic clock. Roughly a second is 1/86,400 of one rotation of Earth.
-
- But, that is the old definition of a second. The problem is that Earth’s rotation is gradually slowly down. A calendar year is 31,556,926 seconds, usually. Leap seconds are periodically added to one day during the year to keep astronomical time in step with the Standard Clocks. One second has been added to our years 19 times since 1972.
-
- The standard clock consists of 54 different cesium atomic and hydrogen maser clocks located around the world. Their timekeeping is merged together to keep any one drift caused by minor environmental changes in line with the rest.
-
- The clocks are synchronized every 100 seconds. Laggards and speedsters are instantly tweaked into line with the majority. Democracy in action. Comparison with the natural time caused by Earth’s orbit and rotation in space is made by a network of 462 very distant quasars as our coordinating system.
-
- Quasars are rotating neutron stars which send a beam like a light house. The ticks of a rotating quasar are thought to be the most accurate clocks in the Universe. Astronomers and physicists try to keep the two clock systems in synchronization. However, Einstein proved that that was impossible. No two clocks in relative motion can be synchronized. We just get as close as we can.
-
- Time is ticking and it is not on your side. Here are some other reviews about time:
-
- 2205 - Optical lattice clocks tell time exactly.
-
- 2201 - The beginning of time, the end of time. The end of time would be the end of endings. Falling objects are drawn to places where time passes more slowly. We call it gravity.
-
- 2123 - Why 60 minutes? Who came up with that?
-
- 2117 - The age of the Universe?
-
- 2101 - Think about time, what time is? This review lists 14 more reviews about time.
-
- 2087 - Is time slowing down? This review lists 26 more reviews about time.
-
- 37: Deriving Time Dilation fro the Pythagorean Theorem.
-
- 368: Time Come to Us in Particles - Planck Time.
-
- March 5, 2019 783
----------------------------------------------------------------------------------------
--- Some reviews are at: -------------- http://jdetrick.blogspot.com -----
-- email feedback, corrections, request for copies or Index of all reviews
- to: ------- jamesdetrick@comcast.net ------ “Jim Detrick” -----------
- https://plus.google.com/u/0/ -- www.facebook.com -- www.twitter.com
-------------------------- Tuesday, March 5, 2019 --------------------------
------------------------------------------------------------------------------------------
No comments:
Post a Comment