5.45×39mm

The 5.45×39mm cartridge is a rimless bottlenecked rifle cartridge. It was introduced into service in 1974 by the Soviet Union for use with the new AK-74 assault rifle. It gradually supplemented, then largely replaced the 7.62×39mm round in service.

History

The 5.45×39mm cartridge was developed in the early 1970s by a group of Soviet designers and engineers under the direction of M. Sabelnikov. Further group members were: L. I. Bulavsky, B. B. Semin, M. E. Fedorov, P. F. Sazonov, V. Volkov, V. A. Nikolaev, E. E. Zimin and P. S. Korolev.

The 5.45×39mm is an example of an international tendency towards relatively small-sized, lightweight, high-velocity military service cartridges. Cartridges like the 5.45×39mm, 5.56×45mm NATO and Chinese 5.8×42mm allow a soldier to carry more ammunition for the same weight compared to their larger and heavier predecessor cartridges and produce relatively low bolt thrust and free recoil impulse, favouring lightweight arms design and automatic fire accuracy.

7.62×39mm

The 7.62×39mm round is a rifle cartridge of Soviet origin that was designed during World War II. It was first used in the RPD. Due to the worldwide proliferation of the SKS and AK-47 pattern rifles, the cartridge is used by both militaries and civilians alike. 7.62×39mm ammunition is purportedly tested to function well in temperatures ranging from −50 to 50 °C (−58 to 122 °F) cementing its usefulness in cold polar or hot desert conditions.

The 7.62×39mm cartridge was influenced by a variety of foreign developments, including the German Mkb 42(H) and the U.S. M1 carbine.

Shortly after the war, the world's most recognized military pattern rifle was designed for this cartridge: the AK-47. The cartridge remained the Soviet standard until the 1970s, and is still one of the most common intermediate rifle cartridges used around the world. It was replaced in Russian service by the 5.45×39mm cartridge, which is used by the current issue AK-74 and variants.

History

274301 Wikipedia

274301 Wikipedia (provisional designations: 2008 QH24, 2007 FK34, 1997 RO4) is an asteroid orbiting in the asteroid belt. It was discovered by the Andrushivka Astronomical Observatory in August 2008. The asteroid was named after the online encyclopedia Wikipedia in January 2013.

Discovery

The asteroid was discovered by astronomers from the Andrushivka Astronomical Observatory (A50) in Ukraine, the country's only privately owned observatory, which has discovered over 90 asteroids since 2003. It was first observed by the Andrushivka team on August 25, 2008, at 22:47 (UTC). It was also observed on the next night and it received provisional designation 2008 QH24. After it was also observed on September 6 by the Andrushivka team, the orbit of the asteroid was calculated accurately. It was shown that the asteroid 2008 QH24 was the same as 1997 RO4 and 2007 FK34 previously spotted by observatories Caussols-ODAS (France), Mt. Lemmon Survey and Steward Observatory (both in Arizona, U.S.). On April 18, 2011, the asteroid received the number 274301. The composition of the asteroid is not known but it is likely to consist, like other asteroids from the asteroid belt, of a mixture of rock and metal.

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  • by Matisyahu

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by: Matisyahu

Slap me Daft, we sat down in the back of the class
To seize knowledge we don't need, I forgot my late pass
But I'm early to a arival beatbox, you got raps?
Meet me on the football field, don't sleep on field, the quarterback
No one clapped when we locked in, it was removal of our class
But my flag got captured and I fell between the cracks
My tool for inspiration turned into a handicap
No matter how I tried, I just couldn't fill the gaps
Those whipper snappers, they got trapped old chap
They lost the way, they never had the right map
Needed a sneak attack to slap the demons off my back
So I packed for the schddle dreamed big I wouldn't settle
Put the pedal to the metal and returned to fundamentals
I'll never forget running through the hall with all y'all rebels
Roaming through the high land, young bucks invincible
Echoes in my brain, if kids report to the principle
Substance dulls the mind
Traife wine clouds the heart
You can't sew a stitch with one hand
While you're taking it apart
Bright lights might look nice
But they sure won't make you sharp
You can't sew a stitch with one hand
While you're taking it apart
Yeah, misty morning and my mum's a mess
To make matters worse dog my pops is stressed
Life is a test, make the grade or catch an F
Now death is all that's left to ponder
I wander off hoping to catch my breath
Yeah, misty morning and my mum's a mess
To make matters worse dog my pops is stressed
Life is a test, make the grade or catch an F
Now death is all that's left to ponder
I wander off hoping to catch my breath
And hold it, mold my memories from untold scripts
And roll up in a tornado twist, now I'm certain
There's a pertinent reason I'm on this earth
Seasons change in white plains, but we remain alert
When new school years appear, fools fear for a failure
And crawl away in tears
I play Popeye the Sailor and stay with spinach
We walk the halls with a grimace
Yeah they gossip in groups
I try to mind my business and tell the truth
For instance, I listen, see it all with basketball court vision
Ignoring ignorance in fields of fiction
We lean back in the calmest position
And embrace the honesty found within our tension
What's good?
Substance dulls the mind
Traife wine clouds the heart
You can't sew a stitch with one hand
While you're taking it apart
Bright lights make you blind
But they sure don't leave you sharp
You can't sew a stitch with one hand
While you're taking it apart
Trapped in the elevator of your mind
Is it real, what will you find behind the door
Your imaginations put you in a bind
Around you there's a cloud of gloom
Swallow the key, lock yourself in a room
Can't see outside of your Universe
No more war, there won't be anymore hunger
No jealousy, not even competition
Let go, release, you hold the keys
Time we evaporate into the breeze
We are nothing, we are something
Let go, release, you hold the keys
It's time we evaporate into the breeze
We are nothing, we'll be something
Welcome to the desert of my soul
You can stay if you like
There's room for one more




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