Volcan_R

Volcan_R t1_ja7hm7c wrote

I don't think there is a clear answer. ABS works by pumping the brakes very fast. It doesn't necessarily stop you faster than locked brakes. Instead it provides steering control authority while you are coming to a stop. The questions then become: does a fresh piece of tire brake better than a piece of tire that is getting hot from sliding friction? Does the act of rolling the tire reduce the effective speed of the sliding part of the friction equation (because the slower you are moving the faster you come to a stop)? I don't think both ABS and engine braking in combination would affect the stopping distance because you are already locking the wheels up as much as the ABS system allows but there might be an advantage to agressive downshifting because the tires continue rolling and that might reduce the sliding component force the wheels need to overcome more effectively than the ABS does by pumping the brakes.

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Volcan_R t1_j9wx3p9 wrote

It is easier to put your head against the window and move the mirror so that you just see the edge of the car and put your head over the center console and do the same for the other side. It absolutely boggles my mind that 95% or more people set their side mirrors wrong. How do I know? I can see all your damn faces in the side mirrors when I'm behind you. You should always still check your blind spot when you change lanes. Extra safety is good, some cars still have a bit of a blind spot, and a car can easily move from your rear to your side mirror in the time it takes to check them.

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Volcan_R t1_j5qlbgq wrote

The technology for accurate GPS measurement isn't particularly complex or expensive. You just need a GPS receiver in a fixed location to log the fluctuations against the GPS you are determining the location of. You would use the same strategy for Gallileo I assume but there isn't the intentional addition of innacuracy for non military use.

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Volcan_R t1_j24bn4v wrote

Yes. We continue to make new elements on the heavy side of the periodic table. They are very unstable and last for very short periods of time. Some people theorise that there might be a group of very heavy elements that are stable and can exist for longer than a few seconds. This theoretical part of the periodic table is called "the island of stability."

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