I went back to look at your 2015 blog post, and stocks reservoir fishing I think I can see the problem. I believe you are saying “there is no unambiguous assignment of coordinate time between spacelike separated points”. This is not at all the same as saying “there is no unambiguous assignment of causality between spacelike separated points”.
- Other people breaking the law does not justify you breaking the law.
- Because of the weight of water vapor the moisture content in the air would be expected to increase the speed of sound.
- Everywhere else in physics we just have relative differences in energy to care about, so you can avoid negative numbers by re-zeroing, but in GR, this has physical consequences.
- The Kansas Department of Transportation announced on June 21, 2011, that 807 miles of roadway, comprising the rural areas of I-70, I-35, I-135, the Kansas Turnpike and the freeway-improved sections of US-69 and US-81, will be raised to 75 mph.
One way to think of spacetime is as a projective metric geometry with a degenerate ideal domain . Euclidean geometry is the same thing, with a different degenerate ideal domain. In each case the degeneracy brings in affine physical features.
Pump The Brakes Or Hit The Gas? Lawmakers Debate Speed Limits
The minimum speed is usually 45 mph (72 km/h) when the speed limit is 55 mph (89 km/h), and 40 mph (64 km/h) when the speed limit is 50 mph (80 km/h). All roadways maintained by GDOT that are subject to speed limit reductions are given advanced notice with signage that says “SPEED ZONE AHEAD”. Furthermore, GDOT has a policy of doing 5–10 mph (8.0–16.1 km/h) increments but never higher than 10 mph. There are also basic prima facie speed limits in Colorado.
I don’t think Einstein’s theory of relativity has been proven to be wrong. Because all science is based on fundamental physics, chemistry, and biology. If the fundamentals change, it can potentially change many other schools of thoughts based on the fundamentals, maybe even the school of thought involve cures for cancer. We are constantly being bombarded by chemicals and radiation. We rushed into technology too fast and greedily without caring about the risks on human health.
It increases the risk that an evasive steering maneuver will result in loss of control. A combination of enforcement, engineering and public outreach successfully reduced speeding in a pilot project in rural Maryland. AAA predicts a busy Memorial Day Weekend with 39.2 million people, 2.5 percent of them from Washington, expected to travel. WINDOWPANE is the live-streaming social network, and multi-media app, for recording and sharing your amazing life. Post comments, photos and videos, or broadcast a live stream, to friends, family, followers, or everyone. Share thoughts, events, experiences, and milestones, as you travel along the path that is uniquely yours.
Differential Speed Limits
But this may be explained by the FTL mechanism itself, if it warps spacetime. Any spacelike leg can serves as the backward leg of a paradoxical loop, so you can only preclude paradoxical loops by prohibiting signaling along every spacelike interval. Hence superluminal travel and signaling is impossible. There is some issue with expressing time with a tachyon. There is an ambiguity in assigning a past and future between two spacetime points or events on the path of a tachyon.
Since the neutrinos permeate everything everywhere, it would be impossible to say for sure that the neutrinos detected came from the collision from opera with absolute certainty. I won’t elaborate as to why on this forum but I believe that neutrinos do not travel faster than light. I remember reading back in the late 70’s a test site out in the western US involving underground caves and water where they were watching for neutrino’s and that these particles actually traveled faster then the speed of light very briefly. According to the theory, as velocity approaches the speed of light , mass increases and tends toward infinity as velocity approaches c. It is impossible to accelerate an infinite mass, so while c can theoretically be approached with arbitrary closeness, it can never actually be attained, much less exceeded. Scientitsts have already observed certain particles react to the same stimulus simultaneously from two end of the united states.
The faster the relative speed, the greater the time dilation between them, with the time rate reaching zero as one approaches the speed of light (299,792,458 m/s). This causes massless particles that move at the speed of light to remain unaffected by the passage of time. “Neglecting relativity, if you were to accelerate with a rate of 1G , it would take you a year to reach the speed of light. However, you would never really reach that velocity because as you start to approach lightspeed, your mass energy increases, approaching infinite. “Technically, the statement ‘nothing can travel faster than the speed of light’ isn’t quite correct by itself,” at least in a non-vacuum setting, Claudia de Rham, a theoretical physicist at Imperial College London, told Live Science in an email. Research shows that the speed limit has little effect on how fast people drive.