Quote from: tbone0106 on October 11, 2011, 06:59:34 PM
Um, doesn't accelerating a mass make its weight increase?

MFA got there ahead of me but no.

"Weight" is the quality mass displays in a gravitational field. That's why your weight will be different on the moon then on the surface of the Earth but your mass won't change.

Also Walks is probably right about Mr. Einstein but eventually we'll bump up against the conditions in which Einstein is wrong. That's how science goes; no matter how right you are eventually you're wrong. Newton was right until Einstein proved him wrong and, sooner or later, someone, somewhen will prove Einstein wrong.

Maybe, but not too likely, that time is now.

That is so true, every theory can be proven wrong at some point in time and later it is proven correct as well.

Someone that only saw ice, would claim water as a solid and would be correct if we all lived in temperatures below 32 deg.

The more facts that become available, the more data changes.
It is for this very reason that I despise the left using science to make wild claims about Co2, we just don't have all the facts/data.

Quote from: Solar on November 20, 2011, 06:51:46 AM
That is so true, every theory can be proven wrong at some point in time and later it is proven correct as well.

Someone that only saw ice, would claim water as a solid and would be correct if we all lived in temperatures below 32 deg.

The more facts that become available, the more data changes.
It is for this very reason that I despise the left using science to make wild claims about Co2, we just don't have all the facts/data.

That what I love about science, it is always changing based on new data.   8-)

Quote from: walkstall on November 20, 2011, 07:18:38 AM

That what I love about science, it is always changing based on new data.   8-)

Me too actually, I love when Nature proves science wrong, it keeps them humble. 8-)

Nature just is. Science is our way of teasing out the details of nature with some reason to believe we've gotten it right.

To second Walk's sentiment, what I love about science is that, at intervals, it delivers a smart slap in the face to our conceits.

This is starting to sound alot like climate change. 
snip~
Study rejects "faster than light" particle finding

In a paper posted Saturday on the same website as the OPERA results, http://arxiv.org/abs/1110.3763v2, the ICARUS team says their findings "refute a superluminal (faster than light) interpretation of the OPERA result."

more @
http://xfinity.comcast.net/articles/news-science/20111120/SCIENCE-US-SCIENCE-NEUTRINOS/

LOL!
When science refutes itself.

Quote from: Solar on November 22, 2011, 07:14:06 AM
LOL!
When science refutes itself.

Einstein has to be RIHGLOL  ( Rolling in his grave laughing out loud)  :))

Looks like what they're saying in the abstract is that because Cherenkov-like[url=http://radiation wasn't observed the results have to be in error.

Not exactly in the highest traditions of pursuit of knowledge but then the scientific method's always been an uncomfortable fit around the necks of scientists. Fortunately, even all those smart folks haven't figured out a way to avoid the grip of the scientific method. At least not for very long.

I'm still pretty sure it'll be experimental error but....every once in a while...] radiation wasn't observed the results have to be in error.

Not exactly in the highest traditions of pursuit of knowledge but then the scientific method's always been an uncomfortable fit around the necks of scientists. Fortunately, even all those smart folks haven't figured out a way to avoid the grip of the scientific method. At least not for very long.

I'm still pretty sure it'll be experimental error but....every once in a while...
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Quote from: arpad on November 20, 2011, 06:30:06 AM
MFA got there ahead of me but no.

"Weight" is the quality mass displays in a gravitational field. That's why your weight will be different on the moon then on the surface of the Earth but your mass won't change.

Also Walks is probably right about Mr. Einstein but eventually we'll bump up against the conditions in which Einstein is wrong. That's how science goes; no matter how right you are eventually you're wrong. Newton was right until Einstein proved him wrong and, sooner or later, someone, somewhen will prove Einstein wrong.

Maybe, but not too likely, that time is now.

Um, maybe I'm still stupid, but isn't "a gravitational field" the exact same thing as "exposure to acceleration?"

Why would you slap me around on this?

Accelerating an object does make its weight increase.  But the general theory of relativity says that when an object approaches the speed of light, its mass increases; not the same thing.

Quote from: MFA on December 22, 2011, 07:41:03 PM
Accelerating an object does make its weight increase.  But the general theory of relativity says that when an object approaches the speed of light, its mass increases; not the same thing.

Yeah, yeah, but where am I misunderstanding this? A man on the moon WEIGHS roughly 1/6 what the same man on Earth WEIGHS because of the lesser gravity -- expressed in terms of ACCELERATION -- of the moon. The mass doesn't change but the weight does BECAUSE of the difference in gravitational pull, which is expressed as ACCELERATION.

Please 'splain.

No, you're right.  Weight changes because of gravity/acceleration.  There is no discernible difference between gravity and acceleration.  They are effectively the same thing.

Don't misunderstand. I'm trying to point out that there is a relationship between mass and weight in our "real" world, and it's based on gravity, which can be expressed as a force that results in acceleration. But I have a certain appreciation for the more cosmic aspects of physics, including Einstein's famous postulations.

Frankly, I've never understood what the speed of light has to do with any of it. Why THAT for a constant? Why isn't it widely known that practically ANY electromagnetic energy has the same velocity in a vacuum?

When I read about the neutrino thing in Europe, I thought... "Cool! I'm here in Italy with my catcher's mitt and watching the gun in Switzerland on closed-circuit TV, and that li'l puppy plops into my mitt before I see the guy on the other end pull the trigger!!!" Well, about 60 nanoseconds before...  :P :P :P