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Brad G
Lived in seoul
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Brad G

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New indoor farm uses LED lights optimal for plant growth; grows 2.5x faster than outdoors; reduces produce loss from 50% to just 10% and cuts water usage to just 1%
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Daniel Hendrix's profile photo
 
Yay! I have to say though, I'm a little concerned that long term exposure to those LEDs could eventually blind them- with science
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Good job Brad!  Proud of you.
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+Adam Epling, I immediately thought of you when I saw this:
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:)
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Luigi deathstare
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Contribute to the Space and Rocket Center to bring the STA to Huntsville!
 
We have just one week left in the campaign to Land the Shuttle Training Aircraft at the U.S. Space & Rocket Center! If you have been waiting to contribute, please consider making your donation today. Thank you for all your support! http://ht.ly/wbUSR
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Have him in circles
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Brad G

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Everything, by nature of simply existing, is "moving" at the speed of light (which really has nothing to do with light: more on that later). Yes, that does include you.
Our understanding of the universe is that the way that we perceive space and time as separate things is, to be frank, wrong. They aren't separate: the universe is made of "spacetime," all one word. A year and a lightyear describe different things in our day to day lives, but from a physicist's point of view, they're actually the exact same thing (depending on what kind of physics you're doing).
In our day to day lives, we define motion as a distance traveled over some amount of time. However, if distances and intervals of time are the exact same thing, that suddenly becomes completely meaningless. "I traveled one foot for every foot that I traveled" is an absolutely absurd statement!
The way it works is that everything in the universe travels through spacetime at some speed which I'll call "c" for the sake of brevity. Remember, motion in spacetime is meaningless, so it makes sense that nothing could be "faster" or "slower" through spacetime than anything else. Everybody and everything travels at one foot per foot, that's just... how it works.
Obviously, though, things do seem to have different speeds. The reason that happens is that time and space are orthogonal, which is sort of a fancy term for "at right angles to each other." North and east, for example, are orthogonal: you can travel as far as you want directly to the north, but it's not going to affect where you are in terms of east/west at all.
Just like how you can travel north without traveling east, you can travel through time without it affecting where you are in space. Conversely, you can travel through space without it affecting where you are in time.
You're (presumably) sitting in your chair right now, which means you're not traveling through space at all. Since you have to travel through spacetime at c (speed of light), though, that means all of your motion is through time.
By the way, this is why time dilation happens: something that's moving very fast relative to you is moving through space, but since they can only travel through spacetime at c, they have to be moving more slowly through time to compensate (from your point of view).
Light, on the other hand, doesn't travel through time at all. The reason it doesn't is somewhat complicated, but it has to do with the fact that it has no mass.
Something that isn't moving that has mass can have energy: that's what E = mc2 means. Light has no mass, but it does have energy. If we plug the mass of light into E=mc2, we get 0, which makes no sense because light has energy. Hence, light can never be stationary.
Not only that, but light can never be stationary from anybody's perspective. Since, like everything else, it travels at c through spacetime, that means all of its "spacetime speed" must be through space, and none of it is through time.
So, light travels at c. Not at all by coincidence, you'll often hear c referred to as the "speed of light in a vacuum." Really, though, it's the speed that everything travels at, and it happens to be the speed that light travels through space at because it has no mass.
edit: By the way, this also covers the common ELI5 question of why nothing can ever travel faster than light, and why things with mass cannot travel at the speed of light. Since everything moves through spacetime at c, nothing can ever exceed it (and no, traveling backwards in time would not fix that). Also, things with mass can always be "stationary" from someone's perspective (like their own), so they always have to move through time at least a little bit, meaning they can never travel through space as fast as light does. They'd have to travel through spacetime faster than c to do that, which, again, is not possible.
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Michael Broughton's profile photo
 
saw this on reddit earlier.  Love ppl who can simplify complicated ideas.  
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Brad G

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+Adam Epling if you don't know the answer, do like this guy did
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We saw this last night...funny!
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Korra tonight!
 
Want to watch an extented preview of the third book? Click here: http://at.nick.com/1v8z5Pi #legendofkorra
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It starts up again tonight?! How did I not know this!
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Verizon Charges: 1. Netflix pays Verizon for broadband use. 2. Customer's Pay Verizon for broadband use.

The Scam:

1. Netflix is pushing their data out like water coming out of a open fire hydrant.

2. Verizon should be putting a FIRE HOSE between Netflix and You because both sides are paying for broadband (really they should be doing it because the end user is paying for high speed but they want to have their cake and eat it too).

3. Instead Verizon is using a GARDEN HOSE to purposely limit the speed, so they can connect 8 Garden Hoses to 1 Fire Hydrant and charge more people for the same pipe.

It worked fine for them for many years because most people were never using the actual bandwidth they were paying for... because all people did was Facebook and Email. So they would be paying $50 a month for 10mb speeds, and hardly ever break past .5mb. So they were making a ton of money without having to invest in infrastructure that could actually support 10mb speeds for all users. But now that has changed because everyone wants to use their 10mb Fire Hydrant... and their aint enough Fire Hydrants to go around.


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Daniel Hendrix's profile photo
 
Maybe they should get a big truck....
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Brad G

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Dads who do household chores more likely to have ambitious daughters
A new study conducted by a group of psychologists at the University of British Columbia suggests that fathers who perform household chores, like cleaning dishes and doing laundry, are more likely to raise daughters who aspire to less-traditional female careers, such as becoming a CEO or lawyer.
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Michael Broughton's profile photo
 
Or this is just an elaborate ploy by Alyssa Croft to get men to do more chores :)

I thought you have kids so they can do the chores?
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Have him in circles
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seoul