Jump to content

  • Log in with Facebook Log in with Twitter Log In with Google      Sign In   
  • Create Account

Welcome to BZPower!

Hi there, while we hope you enjoy browsing through the site, there's a lot more you can do if you register. The process is easy and you can use your Google, Facebook, or Twitter account to make it even faster. Some perks of joining include:
  • Create your own topics, participate in existing discussions, and vote in polls
  • Show off your creations, stories, art, music, and movies and play member and staff-run games
  • Enter contests to win free LEGO sets and other prizes, and vote to decide the winners
  • Participate in raffles, including exclusive raffles for new members, and win free LEGO sets
  • Send private messages to other members
  • Organize with other members to attend or send your MOCs to LEGO fan events all over the world
  • Much, much more!
Enjoy your visit!






Photo

Neutrons Bouncing on Glass

Posted by Akano Toa of Electricity , in Math/Physics Sep 13 2012 · 149 views

Gravity Awesome Science Neutrons
Yes, you read that right.

So, today our physics department had our Journal Club, where one of the professors/grad students get to share a journal article or two that they found in the vast amount of physics literature available to academia. Today our resident dark matter-seeking professor gave the talk, and boy was it awesome.

The researchers whose papers he found were bouncing neutrons on glass and looking at their quantum states due solely to the potential energy caused by gravity. Quantum mechanics with gravity.

For those of you who don't understand how ridiculously awesome this is, let me put it in terms of Classical Mechanics: when a classical object is under the influence of a uniform gravitational potential (like that near Earth's surface), it follows parabolic trajectories. Imagine a ball bouncing on a table; it forms a series of parabolic bounces, each one smaller than the last due to friction and lost energy due to sound and such. This is essentially what this group did, but with neutrons and glass.

However, because neutrons are not classical particles and instead behave quantum mechanically, they don't bounce in parabolic trajectories. Instead, they abide by the laws of quantum mechanics, which means that there are only certain heights above the table at which they are likely to be found and certain heights that they cannot be found. So, a neutron in the ground (lowest) state of this system is most likely to be found at about 10 microns (thousandths of a millimeter) above the glass.

Also, when this was published back in 2005, it was the first time quantized energy levels due to Earth's gravitational potential alone were ever observed experimentally; the theory has been known for a while, but this is the first time anyone has in any way verified it.

Now, this group is attempting to test the properties of the force of gravity using this apparatus and their neutrons. HOW AWESOME IS THAT?!

This blog entry brought to you by SCIENCE!

Posted Image


  • 0



That's completely ridiculously awesome.
    • 0
Photo
Akano Toa of Electricity
Sep 14 2012 08:35 AM
I knew you'd appreciate that. :D

The articles are from Nature, if I remember correctly.

Posted Image
    • 0

About Me

Akano Toa of Electricity
Posted Image
Posted Image
Premier Members
Stone Champion Nuva
Posted Image
1,500+ posts
Posted Image
Proto
+2 for Premier Membership
+1 from Pohuaki for reporting various things in Artwork


Name: Akano
Real Name: Forever Shrouded in Mystery :P
Age: 25
Gender: Male
Likes: Science, Math, LEGO, Bionicle, Ponies, Comics, Yellow, Voice Acting
Notable Facts: One of the few Comic Veterans still around
Has been a LEGO fan since ~1996
Bionicle fan from the beginning
Misses the 90's. A lot.
Twitter: @akanotoe

Posted Image

My Lovely Topics

Posted Image
Posted Image
Posted Image

Hieroglyphs And The Like

IPB Image
IPB Image
IPB Image
IPB Image

Recent Comments

Approvals

Posted Image

Posted Image