I was reading some physics stuff tonight
Mostly Einsteins theory of Specialized Relativity
I'm confused on something. Maybe one of you guys know.....
I ran across this page
http://science.howstuffworks.com/relativity3.htm
Part of that page is this
Quote:
Let's take another trip with the twins, but this time John will travel 12 hours away and 12 hours back, as measured by his clock. Every hour he will send a radio signal to Hunter telling him the hour. A radio signal is just another form of electromagnetic radiation; therefore, it also travels at the speed of light. What do we get as John travels away from Hunter? When John's clock reads "1 hour" he sends the first signal. Because he is moving away from Hunter at 60% of the speed of light, the relativistic Doppler Effect causes Hunter to observe John's transmission to be ½ the source value. From our discussion above, ½ the frequency means the time it takes is twice as long, therefore, Hunter receives the John's "1 hour" signal when his clock reads "2 hours". When John sends his "2 hour" signal, Hunter receives it at hour 4 for him"
Now, I remember learning this in high school, but something isnt adding up for me.
Let's use half the speed of light in my example:
Twin A and Twin B
Both twins are next to eachother
A
B
Twin B travels at 1/2 the speed of light in a direction for 1 hour
A
......................B
Twin B shines a flashlight towards Twin A at that time
shouldnt twin A then see the light from twin Bs flashlight at 1.5 hours? (1 hour from when twin B turned the flashlight on + .5 hours for the light to travel to twin A from twin B
In that authors example twin B is traveling at 60% the speed of light. and the author is saying that it takes the light a whole hour to travel and hit twin A. how did light slow down? is that page just wrong?
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