Showing posts with label relativity-special. Show all posts
Showing posts with label relativity-special. Show all posts

5.19.2007

time { Time is an illusion, lunch time doubly so...

...and hospital time surreal. Recently I've been reminded of a phenomena I call 'hospital time'. Hospital time proves Relativity. When sitting in a hospital room, either as a patient or as a concern friend/family/spouse/etc. time passes differently than the normal world. It is a surreal passage where hours melt away and days merge and blend into one another. You know the world still exists, you can see it going by outside the window. But inside the schedule is one that passes based not on lunar, or rotational cycle, well not a rotational cycle of the earth/moon anyway, but a rotational cycle of nurses, doctors, PCAs. Even though you may or may not be sick and all you do is sit, it is exhausting. You are either worn down by worry, illness, or interrupted sleep schedule.

While in a hospital you are pulled out of the mainstream space/time continuum and float adrift on emotion, hospital coffee, and physical exhaustion.

When I was in the hospital for treatment of AML, it was six weeks. It both felt like an eternity and the blink of an eye. I was in isolation due to not having a functioning immune system and the view out my window was one of a hill and a wall of the hospital. The only visual landmarks I had of the passage of time were the light/dark cycle of day/night, recess of a school on the top of the hill, and changing of guard of the docs on duty. Add in the drugs and time became a simuflow, no longer discreet, no longer trackable, and at times, no longer linear.

4.02.2007

science { its all relative

Very cool story link over on Omninerd: http://www.omninerd.com/2007/03/31/news/1204

It discusses a hypothesis by Dr. Vay using Special Relativity to reduce the time to simulate systems with multiple dimensions of scale (long/short) in both distance and time. Very cool stuff.

From the abstract:



Noninvariance of Space- and Time-Scale Ranges under a Lorentz Transformation and the Implications for the Study of Relativistic Interactions

J.-L. Vay
Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA

(Received 16 January 2007; published 30 March 2007)

We present an analysis which shows that the ranges of space and time scales spanned by a system are not invariant under Lorentz transformation. This implies the existence of a frame of reference which minimizes an aggregate measure of the range of space and time scales. Such a frame is derived, for example, for the following cases: free electron laser, laser-plasma accelerator, and particle beams interacting with electron clouds. The implications for experimental, theoretical, and numerical studies are discussed. The most immediate relevance is the reduction by orders of magnitude in computer simulation run times for such systems.


Omninerd's tiny overview said his first test reduced the compute time from a week down to 30 minutes. This could represent a great leap in scientific study in the field of physics if this catches on.