Examlex
Two flashes of light occur simultaneously at t = 0 in reference frame S, one at x = 0 and the other at x = 600 m.They are observed in reference frame S', which is moving at 0.95c in the positive x direction.The origins of the two frames coincide at t = 0 and the clocks of S' are zeroed when the origins coincide.In S' the coordinate where the leading edges of the two light flashes meet and the time when they meet are:
Hyperactivity
Excessive movement or activity, often referring to behavioral conditions such as ADHD.
WHO
The World Health Organization, a specialized agency of the United Nations responsible for international public health.
Impulse Control Disorder
A group of psychiatric disorders characterized by the inability to resist urges or impulses that could be harmful to oneself or others.
Pyromania
A psychiatric disorder characterized by an impulse to deliberately start fires to relieve tension or for gratification.
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