Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!

 



Forgot your password?
typodupeerror

Slashdot videos: Now with more Slashdot!

  • View

  • Discuss

  • Share

We've improved Slashdot's video section; now you can view our video interviews, product close-ups and site visits with all the usual Slashdot options to comment, share, etc. No more walled garden! It's a work in progress -- we hope you'll check it out (Learn more about the recent updates).

×

Comment: Re:Really good news! (Score 1) 158

by megahurts.gr (#48916929) Attached to: Opera Founder Is Back, WIth a Feature-Heavy, Chromium-Based Browser

Okay, what is available for download right now is a "technology preview" version, which is very basic, it really lacks features.

Essentially, they are telling us that they are proficient enough to connect to the source code repository of chromium, download it, slap their name on it, build it, and ship it.

Which, I guess will do at this point, it shows determination.

What I am really looking forward to is something like Opera 10 or 12.

Comment: Re:"Light drag?" (Score 1) 231

by megahurts.gr (#48881017) Attached to: The Paradoxes That Threaten To Tear Modern Cosmology Apart

Right, it is both (a) and (b). The dominant kind of shift observed is red, and it has minor variations due to actual movement of galaxies in space, in addition to the (supposed) expansion of space.

The Andromeda galaxy, which is the closest one to us, and therefore not very red-shifted to begin with, does in fact move towards us in space, (we will collide at some point in the very distant future,) and for this reason it is slightly blue-shifted.

On the wikipedia entry for "Andromeda Galaxy" http://en.wikipedia.org/wiki/A... the bar on the right hand side says "Redshift z = -0.001001 (minus sign indicates blueshift)"

So, of course the tired light hypothesis does not deny that light undergoes a doppler effect; it just tries to explain why the red shift appears to increase as the distance increases.

Comment: Re:"Light drag?" (Score 1) 231

by megahurts.gr (#48880625) Attached to: The Paradoxes That Threaten To Tear Modern Cosmology Apart

but... but... that's precisely what is supposed to be happening according to the currently accepted models: the red shift is _not_ due to the galaxies actually moving apart in space, it is due to the space itself expanding between them, in combination with the fact that the speed of light remains constant despite the expanding space.

Now, if space is expanding, then I could hold one end of a (long enough) yardstick standing on this galaxy, and you could hold the other end standing on another galaxy, despite the red shift, because the yardstick would be expanding together with the space between the galaxies. This essentially means that there is no way to detect the expansion of space in the physical world other than by studying light. Which means that if light behaves in some way that we do not yet understand, then it could very well be that there is no expansion taking place at all.

The tired light hypothesis says forget that awfully exotic stuff about expansion of space, there is a much simpler explanation, everything is more or less stationary, nothing is expanding, and the red shift is due to some as of yet unknown property of light which reduces its frequency as it travels through space.

Comment: Re:"Light drag?" (Score 3, Informative) 231

by megahurts.gr (#48871089) Attached to: The Paradoxes That Threaten To Tear Modern Cosmology Apart

I am not a physicist myself, but physics is a very interesting topic for me. A long time ago I theorized along these lines, and when I spoke about it with physicists, they told me that my hypothesis has already been considered, and it has a name, and that name is "tired light".

See "tired light" on Wikipedia: https://en.wikipedia.org/wiki/...

Comment: Re:What will happen to their physical condition (Score 1) 236

by megahurts.gr (#48064189) Attached to: NASA Eyes Crew Deep Sleep Option For Mars Mission

But that's all irrelevant to the article. Proper gravity for comfortable space travel is not the issue here; the issue is minimizing the cost of the travel. And sleeping astronauts travel a lot cheaper than woken ones. Plus, they don't need gravity. Unless someone is under the impression that proper gravity will help with the muscles of sleeping astronauts, which I highly doubt.

Comment: Re:What will happen to their physical condition (Score 1) 236

by megahurts.gr (#48064153) Attached to: NASA Eyes Crew Deep Sleep Option For Mars Mission

There are far easier ways to do it. For example, the entire ship can be a wheel, instead of having to be a ship with a wheel on it. And it does not even have to be shaped like a wheel. Tether the living compartment to a spent rocket stage, and let the two rotate around their common weight center which will be at some point along the tether line.

Matter cannot be created or destroyed, nor can it be returned without a receipt.

Working...