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bio website usabilityPolice.com
location London, United Kingdom
age
visits member for 3 years, 9 months
seen 18 hours ago

Online Video, Web Development, Adobe Flash platform, MediaWiki platform, social media, usability enthusiast, social good ... and many more.

http://twitter.com/daniel_sedlacek


2d
comment Does lunar module need the same amount of fuel for landing and take off?
nope, crash landing is not part of this question :)
Nov
20
comment Is there any limit on movement of space itself?
Every metaphor is imperfect simplification but that shouldn't prevent scientist from explaining concepts to layman. Strangely you don't like the rubber sheet metaphor - I used to think about objects in space as smarties in jello - if they are tunnelling through the jello they are moving. If the jello itself is warping bringing two objects closer or further then they were without them tunnelling through the jello then the space is moving while the objects are not moving. Or is this metaphor too far from reality?
Nov
20
comment Is there any limit on movement of space itself?
Thanks for the undoing the hate. I am just a layman trying to understand interesting things.
Nov
20
comment Is there any limit on movement of space itself?
So space can expand, warp, wave, bend, distort but not move. Got it. So is there a limit at which can space move but not move?
Nov
20
comment Mach's principle in empty universe, centripetal force and violation of Newton's laws of motion
I am not a physicist, I was merely reading Wikipedia when I got curious about the absolute rotation question and in there Mach's principle is presented as credible theory, certainly not outmoded like flat Earth. Does that mean that absolute rotation is accepted by mainstream physicists and Mach's principle is considered outmoded?
Nov
20
comment Is there any limit on movement of space itself?
How is it different? Does the space not move when gravitation waves propagate through it?
Aug
20
comment Angular momentum power plant on Earth
This is the kind of answer I was looking for, thanks.
Dec
21
comment Angular momentum power plant on Earth
what is impractical on tidal power plants? :)
Sep
7
comment Is fire plasma?
interesting, can other people please confirm this too?
Apr
9
comment Is fire plasma?
Don't have a fireplace here nor a strong magnet. The answer is?
Mar
5
comment Are tidal power plants slowing down Earth's rotation?
@Mark I think they are. It's the same principle as a child on a swing, I think.
Mar
5
comment Are tidal power plants slowing down Earth's rotation?
@Ted Thanks for the energy consumption calculation. Are you saying the earth will stop rotating one day completely? That will happen even without the power plants, right?