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Terra Walker

Fun with my red toes at trivia ;)

Hunter S Dogson has decided he gets the bed tonight. #instadog #beagle at least I’ll have warm toes.

Denver Broncos 2014 Schedule

Denver Broncos 2014 Schedule #printable #nfl #BroncosChat

Oh, yeah, in exactly two weeks I’ll be adding football to the WordPress stream.

Let’s do this, fellas!

2014 Broncos ScheduleFeel free to print yourself a copy and share it with all your friends!

XOXO

View On WordPress

amnhnyc:

This diagram shows our cosmic address at a glance. We see our planetary system around the Sun, our stellar neighborhood in our galaxy, our galaxy in the local group of galaxies, and our group in the entire universe. 

Learn more in the Cullman Hall of the Universe

You are here

(via ldszumski)

teamcoco:

From last night’s #Conan monologue. (at CONAN)

forbes:

"I’m the person in charge." The first female four star admiral discusses her exciting and challenging work. 

(via washingtonpost)

dazeddigital:

It’s State of Lit week on Dazed!

We want to see US Tumblrs which represent American literature at its most creative. Send us short stories, poems, sentences, words…

Submit your Tumblr here, with a short description and whereabouts in the US you are. Good luck!

" [Nichelle Nichols’] record of accomplishment speaks for itself: NASA originally had 1500 applicants from women and minorities on file. Women in Motion helped spur that number to exceed 8000 in six months. Nichols received the American Society of Aerospace Education’s Friend of the Year award for ‘outstanding contributions to the promotion of aviation and space. "

- from a November 1985 article in Starlog about Nichelle Nichols’ work with NASA’s Women in Motion program. (via trekkiefeminist)

(via scienceetfiction)

jtotheizzoe:

spaceplasma:

xysciences:

A gif representing nuclear fusion and how it creates energy. 

[Click for more interesting science facts and gifs]

For those who don’t understand the GIF. It illustrates the Deuterium-Tritium fusion; a deuterium and tritium combine to form a helium-4. Most of the energy released is in the form of the high-energy neutron.

Nuclear fusion has the potential to generate power without the radioactive waste of nuclear fission (energy from splitting heavy atoms  into smaller atoms), but that depends on which atoms you decide to fuse. Hydrogen has three naturally occurring isotopes, sometimes denoted ¹H, ²H, and ³H. Deuterium (²H) - Tritium (³H) fusion (pictured above) appears to be the best and most effective way to produce energy. Atoms that have the same number of protons, but different numbers of neutrons are called isotopes (adding a proton makes a new element, but adding a neutron makes an isotope of the same atom). 

The three most stable isotopes of hydrogen: protium (no neutrons, just one proton, hence the name), deuterium (deuterium comes from the Greek word deuteros, which means “second”, this is in reference two the two particles, a proton and a neutron), and tritium (the name of this comes from the Greek word “tritos” meaning “third”, because guess what, it contains one proton and two neutrons). Here’s a diagram

Deuterium is abundant, it can be extracted from seawater, but tritium is a  radioactive isotope and must be either derived(bred) from lithium or obtained in the operation of the deuterium cycle. Tritium is also produced naturally in the upper atmosphere when cosmic rays strike nitrogen molecules in the air, but that’s extremely rare. It’s also a by product in reactors producing electricity (Fukushima Daiichi Nuclear Power Plant). Tritium is a low energy beta emitter (unable to penetrate the outer dead layer of human skin), it has a relatively long half life and short biological half life. It is not dangerous externally, however emissions from inhaled or ingested beta particle emitters pose a significant health risk.

During fusion (energy from combining light elements to form heavier ones), two atomic nuclei of the hydrogen isotopes deuterium and tritium must be brought so close together that they fuse in spite of the strongly repulsive electrostatic forces between the positively charged nuclei. So, in order to accomplish nuclear fusion, the two nuclei must first overcome the electric repulsion (coulomb barrier ) to get close enough for the attractive nuclear strong force (force that binds protons and neutrons together in atomic nuclei) to take over to fuse the particles. The D-T reaction is the easiest to bring about, it has the lowest energy requirement compared to energy release. The reaction products are helium-4 (the helium isotope) – also called the alpha particle, which carries 1/5 (3.5 MeV) of the total fusion energy in the form of kinetic energy, and a neutron, which carries 4/5 (14.1 MeV). Don’t be alarmed by the alpha particle, the particles are not dangerous in themselves, it is only because of the high speeds at which they are ejected from the nuclei that make them dangerous, but unlike beta or gamma radiation, they are stopped by a piece of paper.

Some fundamentals of fusion.

jtotheizzoe:

nevver:

Snake facts

The fact that some snakes still have pelvises will never not be weird and amazing.

" Date someone who gives you the same feeling of when you see your food coming at a restaurant "

- THE REALEST THING I HAVE EVER READ (via lilwombatprincess)

(Source: sarcasmfluently, via manicsocratic)

" So, please, oh please, we beg, we pray, go throw your TV set away, and in its place you can install, a lovely bookcase on the wall. "

- Roald Dahl (via kushandwizdom)