Positronium Positronium (Ps) is a system consisting of an - TopicsExpress

Positronium Positronium (Ps) is a system consisting of an electron and its anti-particle, a positron, bound together into an exotic atom, specifically an onium. The system is unstable: the two particles annihilate each other to produce two or three gamma-rays, depending on the relative spin states. The orbit and energy levels of the two particles are similar to that of the hydrogen atom (electron and proton). However, because of the reduced mass, the frequencies of the spectral lines are less than half of the corresponding hydrogen lines.

Urgent Hiring: Food and Beverages Industry Positions :

A couple of thoughts on the US Senate race here in Mississippi.

Wainhomes have submitted an application (PA13/10717) to ask that

As feridas que nunca saram Um belo dia , Sr. Mário, um velho

So as of late I havent been posting reviews of movies that I have

When people are more trouble than they are worth, it is so good to

TONIGHT: Dade County vs Model Its a HOME game. Its the last

PERFECTLY PUT Candice Cook Simmons: There are so many egregiously

EMPTY DAYS (AltrOck Productions,

Call for DESIGN PROJECT jeczagallery is looking for a new face.

It’s one thing to worship and praise God at church; it’s quite

Tenho pouco mais de 30 anos, mas confesso que em alguns momentos

The Bible In One Year Psalm 73:15-28 · Acts 9:1-31 · 2 Samuel

13th Dimension, the name of the planet in low gothic, resides as

Ive never met my real mother. She gave me up right after birth.

Want to win an Android Tablet? Book your place on our Teach in

Modern Science has discovered that in the places where two

12:30 am folding and sorting clothes for this weeks Clean Shirts

RSS Broadcast at 12-23-2014 01:23:37: Slashdot ----- Comcasts

✖ 2001 BMW Z3 Roadster Impala Brown Metallic 418 Paint: Gallon