motorized mechanism

Nikola Tesla was an inventor, discoverer, electrical engineer, mechanical engineer, theoretical and experimental physicist, mathematician, futurist and humanitarian. He is responsible for over ninety percent of the transmission of electrical power the world relies on today thanks to his discovery of the rotating magnetic field. The inventor utilized this discovery in his invention and patent of the first commutatorless alternating current induction motor which changed the future of power transmission. All electrical technology using or generating alternating current today is due to Tesla, without which all our trolley cars, electric vehicles, subways, manufacturing/industrial plants and electrified power lines, which bring power to almost every single electrical appliance/equipment in our homes/work, would be impossible.

Tesla was a Serbian born on July 10, 1856 at midnight in Smiljan, Lika (in what is now Croatia). He was educated at an early age by his parents before attending the Gymnasium Karlovac in Croatia, the Polytechnic Institute in Graz, Austria; and the University of Prague excelling in linguistics, mathematics and sciences. He was a hyper-polyglot who could speak eight languages including: Serbo-Croatian, English, Czech, French, German, Hungarian, Italian, and Latin. He claimed to have had a three-dimensional memory and thought process that tormented him in his youth, but later aided him with building his inventions in his own mind without wasting any physical energy. He was known to be able to recite by heart full books, mathematical formulas and poetry such as Goethe’s “Faust,” Njegoš’ “The Mountain Wreath,” Dante’s “Divine Comedy,” Shakespeare’s “Hamlet,” Byron’s “Childe Harold’s Pilgrimage,” and Pushkin’s “Eugene Onegin.”

In 1881 while walking with a friend in a City Park reciting Goethe’s “Faust,” Tesla first envisioned the rotating magnetic field and his induction motor– complete, perfect, and operable in form. This visualization would represent the same diagrams shown in a lecture given before the American Institute of Electrical Engineers in 1888.

After his revelation, in 1882, Tesla’s began working for a telephone company in Europe, while he worked independently on his induction motor. In 1884, he moved to America in hopes of capitalizing on his new discovery. Initially, Tesla was hired by Thomas Edison, but the famous American inventor was not interested in Tesla’s alternating current system, due to his already strong interest in direct current power transmission. Tesla would continue working for Edison until Edison promised him $50,000 to make improvements on his DC generation plants. After completing the task, Tesla asked to be paid, but Edison denied him his offer and explained that the offer of $50,000 was just an “American joke.” Edison offered Tesla a small raise, but Tesla resigned instead.

After his fallout with Edison, Tesla was offered his own lighting company by some small investors, but unfortunately, they were also not interested in Tesla’s alternating current system. Tesla would invent a new and efficient arc lamp for the company, but would be forced out of the business after completing his work. This was a bitter blow to the young Serbian who resorted to digging ditches for $2 an hour in order to get by in a new country.

Tesla’s luck would soon change in 1887, after he received a chance to demonstrate his system of alternating currents to some financiers with his famous “Egg of Columbus” demonstration. This great event would lead to the filing of his Alternating Current Poly-phase Induction Motor patent. This opened a wide door for the introduction and commercial development of alternating current motors.

Tesla pushed forward building apparatuses equal in productivity to DC motors, forcing the scientific community to recognize his work. Because of this work, in May of 1888, a publication of Tesla’s work was read before the American Institutes of Electrical Engineers. Prior to Tesla’s invention, it was considered impossible to eliminate the brushes and commutators on the old motors, but the introduction of Tesla’s new electrical theory and practice was an obvious departure from the old into the new. It was completely revolutionary yet so simple. The introduction of his new patent would spark a strong interest in American entrepreneur, George Westinghouse, who would later buy Tesla’s patents, and throw all his resources into the development of Tesla’s work. This new industry in power transmission would eventually start a feud between the Westinghouse Company and Thomas Edison’s General Electric Company–known as the “War of Currents" (AC/DC)…

(to be continued…)

“One afternoon I was walking with a friend in the City Park and reciting poetry. At that time I knew entire books by heart, word for word. One of these was Goethe’s “Faust;” and the setting sun reminded me of the passage:

“The glow retreats, done is the day of toil; It yonder hastes, new fields of life exploring; Ah, that no wing can lift me from the soil, Upon its track to follow, follow soaring!“

“Even while I was speaking these glorious words, the vision of my induction motor, complete, perfect, operable, came into my mind like a flash. I drew with a stick on the sand the vision I had seen. They were the same diagrams I was to show six years later before the American Institute of Electrical Engineers. My friend understood the drawings perfectly; and to me the images were so real that suddenly I cried, “Look! Watch me reverse my motor!” And I did it, demonstrating with my stick.

This discovery is known as the “rotating magnetic field.” It is the principle on which my induction motor operates.”

–Nikola Tesla

“Making Your Imagination Work For You.” American Magazine, April, 1921.

Today in medical history: July 3, 1952

On July 3, 1952, a team of General Motors scientists and engineers finished development on the Dodrill-GMR Mechanical Heart—the mechanical heart pump used in 1952 for the world’s first successful open heart surgery.  GM developed the device for the heart surgery team at Wayne State University in Detroit, and donated the machine to the hospital at no cost to the university.

The device was developed to keep patients alive during open-heart surgery. A precursor to modern heart-lung machines, the Dodrill-GMR Mechanical Heart was used to sustain the patient’s blood-pumping functions during the operation.

anonymous asked:

Headcanons for how the space family smell. And what smell comforts them

(I’m assuming this includes everyone not just the paladins so yeeeee!! My first one with Allura and Coran… i think)(also would like to say i am super sorry for not doing much i’ve been busy with school but i have a couple of things I’m working on)

Allura: Always smells good even after training. It’s like she has this constant cloud of perfume and that clean smell following her, she never smells bad. It baffles the crew. (It’s because of a special Altean shampoo but shhh don’t tell the others she finds joy in their confusion) Finds comfort in the smell of the clothes that she hasn’t worn since before going into hyper-sleep. They still have the old smell of Altea on them and she refuses to wear them until she has to.

Coran: Has that Uncle Smell on him. The one where it’s not bad and it’s not exactly good to smell it’s just… There. It’s hard to explain it, no one can. Also has a hint of Old Spice on him. (probably found a can of it after Lance or Keith left it somewhere and hasn’t given it back since). His comfort smell is the smell of the Castle before they got put in pods for 10,000 years. Like it’s different from before that because hey new scents are gonna change it, but there are some rooms that no one has been in yet or rarely go in so the smell of the Castle before everything is still there and so he’ll just go in and sit in them, reading a book or something.

Shiro: Smells like a mixture of “man” smell (you know that pleasant sweaty smell? yea that one) and pine trees. Again no one is sure why, but 9 times out of 10 he smells like that. Even Shiro wonders where the pine comes from. (Except after training then you better stay clear of this man) His comfort smell is most likely anything that reminds him of Earth (Ex. smell of wet dirt, grass, even city air) Another one is clean clothes with the lavender scent. Don’t ask why, cause he doesn’t know. It’s just comforting.

Keith: Either smells like too much Axe or sweat from training. There is no in between. There are rare occasions where he just smells nice and the universe seems to have finally come to order. Then the next day comes and it’s over. Especially be careful after he trains for longer than 30 minutes: he can clear a room. His comfort smells would be things that remind him of his shack back on earth; dry air, that almost ‘sun’ smell (like the smell of the ground just being baked). He has also grown to like the smell of the lounge room (surprised him really). It’s one of the places everyone likes to hang out together, and the longer they hang out, the more their scents linger. He finds it nice to have a little family and to be familiar with them. He’s never had that before (as far as we know).

Pidge: Smells like a mixture of metal, wires, and fresh, all at the same time. I mean everyone has it a little bit, but Pidge has it the most because of just how many hours she spends on her computer or messing with her Lion. It’s an odd smell honestly, and no one (but Hunk and Coran cause both are mechanics) is quite sure whether they like it or not. The fresh part is nice, it’s just the rest that kinda makes them question it. Comfort smells consist of home cooked meals and the smell of her clothes. Sometimes she won’t change them for a few days either cause she’s so focused she just forgets or she doesn’t want to cause they smell so much like home. It all takes her back to her house, where things were good and safe and okay.

Lance: Smells like sea salt(in a good way), shampoo, and a decent amount of Axe. He has good hygiene so he smells like this almost constantly (But he can’t beat Allura. No one can). And I’m almost certain you will almost never catch this boy wearing dirty clothes, it’s how he maintains this smell illusion. His comfort smells are also home cooked meals (like the smell of his abuela’s cooking if you headcanon Lance has Hispanic/Latino), sea air, and the smell of his house. This boy just wants to go home. (Also he finds great comfort in the way his mom smells. Like have you ever just hugged your mom or someone you really love and their smell just hits you and you feel like 108467840265734825465% better? Yea that’s how it is for him)

Hunk: This boy smells either like a buffet or a car engine. There is also no in between. I mean it all depends on when you catch him. If it’s after he is done cooking then you get Buffet Hunk. If he has just finished repairing the Lions or somewhere in the Castle, he smells like Car Engine Hunk. But either way there will always be this faint smell of warmth and comfort on him too. It just takes the edge off of the two very different scents. So no one minds as much. If you catch him where he isn’t doing either then that background scent will take center stage and it’s such a nice smell you could just melt if you hug him at this point. His comfort smells are the… odd ones though. Like he finds comfort in motor oil and other mechanical smells. Or like he loves the smell of old candles or odd spices. There isn’t one smell he can pin point as his favorite.

The Greaser's girl (Shalaska) - Frida and Wick

A/N: Sharon’s a Greaser girl, working on cars is what she does for a living. One day a pretty blonde stops by and… she’s in a bit of trouble.

Shalaska 50s AU one-shot, with a bit of Biadore on the side! Frida wrote the outline and Wick edited! We hope you enjoy, feedback is always welcome! xoxo Frida and Wick

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This is an extensive list of careers, with over 1000 listed careers, from small time all the way up to astronaut. Ever had trouble figuring out what your character could be doing for a living, or are you sick and tired seeing the same occupations listed over and over again? This masterlist will help you both in creating a unique original character, or occupationally diverse pre-made- and skeletal bios for your RP.

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Requiesce, scies pace.

The battlefield cross of Lance Cpl. Caleb L. Erickson sits on display during his memorial service at Camp Leatherneck, Afghanistan. Erickson, of Waseca, Minn., a motor transportation mechanic stationed out of Camp Lejeune, N.C., died while conducting combat operations in Helmand province, Afghanistan, Feb. 28, 2014.

(Article and photo by Corporal Joshua Young, 7 MAR 2014.)

“We’ve come together today to remember Lance Cpl. Caleb Erickson,” said Navy Lt. Doyl E. McMurry, the 1st Battalion, 9th Marines chaplain during the opening prayer for Erickson’s memorial. “He was many things to many people, but to us he was our brother.”

Erickson, 20, of Waseca, Minn., was stationed out of Camp Lejeune, N.C. He is remembered by his peers as a Marine who would always volunteer for the jobs that others didn’t want to do but made those jobs fun with his sarcastic humor. 

“He always found the positive side of everything,” said 1st Lt. John Matlaga, the logistics officer for Motor Transportation Platoon, 1st Battalion, 9th Marines. “His sense of humor and optimism always lifted the hopes and moods of those around him.”

Erickson’s peers who spoke at his memorial all mentioned his work ethic and willingness to help everyone. When Erickson saw others working, he would drop what he was doing to help them out. He was loved by all and showed his love for all with his selfless attitude. 

“The day of the convoy, most of the platoon left for a quick chow break after the brief,” said Cpl. Martin McNamara, also with 1st Battalion, 9th Marines, who then began prepping his truck while others ate. “When the guys came back, there was Erickson, with a heaping to-go tray in his hands. He said, ‘Hey man, I grabbed you some food.’ I told him I hadn’t expected anyone to grab anything for me. He said, ‘Hey, you’re my driver, I gotta make sure you’re taken care of.’ I patted him on the shoulder and said, ‘Erickson, this is why I love you,’ not knowing it would be my last time.”

Everyone who knew Erickson knew of his love for his Volkswagen GTI and his fellow Marines, but Erickson loved one thing more than all others, his family.

“Everyone knew that about him, how close he was with his family,” said Lance Cpl. Derek Feick, 1st Battalion, 9th Marines, who commented on Erickson’s ‘trademark smile’ during the memorial. “I think he got the most letters out of anyone in the whole platoon while we were out here. That just shows how much he was loved and if you ever met him, you knew why he was loved.”

Erickson had a strong Minnesota accent that he and his peers loved to make fun of. His fellow Marines knew him as someone who would make himself the butt of the joke to keep everyone smiling and laughing.

“He was a model for how every man should be,” said Lance Cpl. Zachary Dewar, with 1st Battalion, 9th Marines, who considers Erickson his best friend and brother. “He always had a smile on his face, and if you didn’t, he’d put one on your face within two seconds of talking to him. He was the greatest man I’ve ever met. I plan on living every day just as he would, and I hope others do too. He made an impact on others’ lives and a huge impact on mine. I know you’re up there, keeping us safe. The memories of you are what keep me going. Semper Fidelis, I love you brother.”

Conrad Dasypodius, Heron Mechanicus, Strasbourg, 1580.