micdotcom:

9 graphics to help you understand what Gaza life is really like 

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Pain

"Sticks and stones may break my bones, but words will never hurt me."

Or will they?

The same areas of the brain get activated when we experience social rejection or the betrayal of a loved one as when we spill hot coffee on our arm. In other words, emotional pain hurts the same as physical…

Secret

What is your deepest, darkest secret? One you’ve never told a soul.

Did you betray a friend’s confidence or, shoplift from the campus store? Maybe you are dying to sleep with the girl sitting in front of you?

Right now, there is a war going on in your brain.

Our best guess is that your…

Feelings

Take a good look at the person sitting closest to you. What do you see? A rival? An ex-lover? The guy who thinks you don’t know he copies your notes every class? Would it surprise you to learn it’s mostly a fantasy?

We get to know people by taking a few small clues, that we have about them;…

Love

How does love rewire the brain?

When we meet somebody new and exciting, they invade our synapses like a virus, triggering neurochemicals that feed into attraction, arousal, even obsession. We get distracted. We think about that special someone all the time, even in the middle of a brilliantly…

projecthabu:

     This magnificent F-1 rocket engine is on display in front of the Infinity Science Center in Hancock County, Mississippi. Infinity is located across the highway from NASA Stennis Space Center, where they tested these beasts during the Apollo days. Beside the enormous F-1 stands an H-1 engine, which produced eight times less thrust (shown in final photo).

     During testing, five F-1 engines, each producing 1.5 million pounds of thrust, roared to life, liquefying the ground with its acoustic shock wave surrounding the B-2 test stand at Stennis. Eventually, five of these engines would carry the Saturn V rocket (shown in a previous post, click here to view) for the first 150 seconds of its journey, guzzling fifteen tons of fuel per second. I once heard that these engines got an average fuel mileage of two inches per gallon.

     The F-1 uses an RP-1 (refined kerosene, similar to jet fuel) as its fuel, and a LOX (liquid oxygen) oxidizer. It is currently the most powerful liquid fuel rocket engine in existence. There have been more powerful solid fuel engines, and liquid fuel engine clusters.

     The engine was designed by Rocketdyne, first for the Air Force, who wanted a large engine such as this. Later, the Air Force dropped the program after a testing phase, but NASA restarted the F-1 development for use with their space program.

     Incredible problems were overcome during the development of this engine. Notably, a condition called combustion instability. During combustion instability, the gasses in the combustion chamber began to spin at an incredible two thousand cycles per second, creating hot spots in the chamber structure, which eventually cause the engine to fail catastrophically, (e.g. explode). The problem was overcome, after months of research and thousands of man hours, by redesigning the injector plate (shown in the third photo) numerous times, until the problem mostly went away.

     Amazingly, the operational life of the F-1 may live on. A team is currently firing an original F-1 at NASA Marshall Space Flight Center (a facility which I covered in a previous post, click here to view), familiarizing themselves with it’s characteristics, and will be modifying the design for possible use with the final evolution of the future NASA SLS rocket. This modified engine will be called the F-1B, and will produce 1.8 million pounds of thrust, which is far more than the original. I’ve covered the first first flight-ready component of the SLS booster in a previous post (click here to view).

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أنا لستُ وحيداً : إن الله مَعي

I’m not alone; Allah is with me. (via completebalderdash)

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i feel you

theshinylight:

synonymous—2:

the converts who left their identities behind; that have turned all their parents and ancestors taught them into broken 404 links that lead to nowhere. i feel you. to those who have tension with the same people that brought them into this world because…

Had Allah lifted the veil for His slave and shown him how He handles his affairs for him, and how Allah is more keen for the benefit of the slave than his own self, his heart would have melted out of the love for Allah and would have been torn to pieces out of thankfulness to Allah. Therefore if the pains of this world tire you, do not grieve. For it may be that Allah wishes to hear your voice by way of Du’a. So pour out your desires in prostration and forget about it and know, that verily Allah does not forget.

Ibn Qayyim Al-Jawziyya Rahimahullah (via nargessi)

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witnessingthisdunya:

I’m just glad there’s 9 pictures.

lustik:

Embroidered Leaves by Hillary Fayle. (photos: Natalie Hofert)

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baron-von-daniel:

High Quality Blog

baron-von-daniel:

High Quality Blog

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