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  #476  
Old 04-02-2017, 10:42 AM
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  #477  
Old 04-09-2017, 06:22 AM
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  #478  
Old 04-13-2017, 05:10 AM
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Just for the headline: Hubble just spotted something massive coming out of Uranus | Metro News
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  #479  
Old 04-14-2017, 12:26 AM
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  #480  
Old 04-15-2017, 06:11 PM
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This was all quite fascinating,
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  #481  
Old 04-18-2017, 04:04 PM
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  #482  
Old 04-19-2017, 02:37 PM
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Default Re: Drive by science

Physicists observe 'negative mass' - BBC News

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"With negative mass, if you push something, it accelerates toward you," said co-author Michael Forbes, assistant professor of physics at WSU.
:saywhat:
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  #483  
Old 04-21-2017, 04:21 PM
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Default Re: Drive by science

Exactly that!

You can think of inertial mass (to distinguish it from anything involving gravity or parameters in a particle theory) as a measure of how much something resists being pushed off its current course. If something is sat still, its mass indicates how much force you'd need to apply to get it to accelerate away from that force. A low mass is easy to make accelerate; a high mass much harder.

If you have a negative mass, then it measures just the opposite: how much force you need to apply to get it to accelerate toward that force.
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  #484  
Old 04-21-2017, 06:15 PM
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Hmm so if you wanted to get really close to real science in sci-fi, tractor beams could work by inducing a negative inertial mass in an object then using energy to push the object away, dragging it in.
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  #485  
Old 04-21-2017, 07:46 PM
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Originally Posted by Ari View Post
Hmm so if you wanted to get really close to real science in sci-fi, tractor beams could work by inducing a negative inertial mass in an object then using energy to push the object away, dragging it in.
I mean, if you've solved the bolded part, you probably didn't need to. You probably have some other way of tractor-beaming whatever you want tractor-beamed. But sure.
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  #486  
Old 04-22-2017, 09:22 PM
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  #487  
Old 04-22-2017, 09:46 PM
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Default Re: Drive by science

Quote:
Originally Posted by slimshady2357 View Post
Physicists observe 'negative mass' - BBC News

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"With negative mass, if you push something, it accelerates toward you," said co-author Michael Forbes, assistant professor of physics at WSU.
:saywhat:
I once knew a girl that was like that.
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  #488  
Old Yesterday, 01:12 AM
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