Variable Speed
Variable Speed
How accurate are the M42 variable speed cameras?
I was doing about 45mph when the speed limit went down to 40mph. I couldn’t slam on the brakes as cars were merging from the left joining the m-way – note other cars were going slightly faster than me. Any thoughts on if I will be have been ‘done’?
Annoying if I have – I never speed that much, do 30K miles per year and have never had any points since I passed my test in 2003!
Barry B – The signs are variable – they change all the time. This stretch or road is a constant annoyance to drivers who spend the whole stretch looking at their speedos not the road! I was looking ahead at other cars and trying not to crash i.e speed up/move over to let them in!
not all the cameras on the 42 work, they use maybe 2 cameras out the lot. its very easy to spot a camera in one of the units as you can see the flash in the ones with the camera and the rest are just empty boxes. doing 45 you are border line as they tend to trigger at about that (5mph over) as they have to allow for older cars where the speedo is slightly out by a few mph. if you have heard nothing then i wouldnt wory too much, if you got caught then you would have seen the flash in your mirrors. i know many a people who have zoomed past me while ive been on there and never seen a flash. they use gatso type cameras on there but in places they do use the specs cameras (its a camera, usually yellow that takes a pic of your car in 1 place then a mile down the road takes another and calculates your distance to speed). i think you will be ok.
Variable Speed
Does anyone know anything about the variable speed of light hypothesis?
The science channel discussed Joao Magueijo’s Big Bang where he proposed that cosmic inflation is unnecessary and that it is possible that the speed of light was variable in the beginning. How could this be possible, anyone have ideas?
The best way to understand it is to read his book. It’s quite readable. His view is that ‘how could this be possible’ has an easier, more sensible answer than ‘how could inflation be possible’. In a way, both are wild guesses attempting to find a consistent extreme extrapolation. Developing theories like this is like walking out on a diving board that gets narrower with every step.
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