Mechanical Engineering Rocks Quotes

The Moffat Tunnel is a cathedral to engineering. Its simplicity occludes its sophistication, with the creation of nothing from something—the deliberate absence of rock amid incalculable weight. The finalized engineering marvel has a ventilation system that performs a complete air exchange within the tunnel in 18 minutes. The seemingly endless stone archway has intricately designed and perfectly positioned “umbrellas” to disperse alpine lake seepage to either side of the tracks. During construction, on February 15, 1925, tunneling progress stalled 1,100 feet directly under Crater Lake as 1,800 gallons per minute of water began flowing into the tunnel. At the suggestion of electrician K.S. Weston, crews ventured to the lake, cut through three feet of ice, and poured in 10 pounds of chloride of lime. Shortly thereafter, the presence of lime was detected inside of the tunnel. In an attempt to close the seam, a stick of dynamite was tossed into the lake, and the flow rate dropped drastically to 150 gallons per minute and then slowed to a trickle. Multiple times per day, the visceral vibration of mechanical thunder reverberates through the bowels of the earth.

I will show you how to apply that concept to your life as a rock star, secret agent, UN sniper, or Roller Derby MVP. I am qualified to do this because I’m a mechanical engineer. That’s what we do. We take scientific concepts and make them useful.

Computer engineers of today are likely to find that if they have a two-week holiday they may miss a crucial new development in computing. Similarly, those wishing to keep abreast of mechanical engineering in the late nineteenth century had little choice but to keep working at the coalface where knowledge was being sledge-hammered out of the rock of ignorance.

There’s no on-board starter on the car. If you spin and don’t manage to keep the engine running, you have two problems: first, the engine’s stopped, so you’ll need mechanics armed with a pit starter motor to get back in business; second, it’s stuck in whatever gear you were in at the time, and because the gear shift is hydraulically powered, it’s not until the engine is running that you can then go back down through the gears. But, of course, the mechanics can’t start the car in gear, because it would race off away from them. They need to come to the car with a little ratchet spanner and manually rock the car backwards and forwards while working the spanner on the end of the gear-shift barrel until it gets back down to neutral. Only then can they put the starter in and restart the car and off you go again.

glory, at the Science Museum of London. Charles Babbage was a well-known scientist and inventor of the time. He had spent years working on his Difference Engine, a revolutionary mechanical calculator. Babbage was also known for his extravagant parties, which he called “gatherings of the mind” and hosted for the upper class, the well-known, and the very intelligent.4 Many of the most famous people from Victorian England would be there—from Charles Darwin to Florence Nightingale to Charles Dickens. It was at one of these parties in 1833 that Ada glimpsed Babbage’s half-built Difference Engine. The teenager’s mathematical mind buzzed with possibilities, and Babbage recognized her genius immediately. They became fast friends. The US Department of Defense uses a computer language named Ada in her honor. Babbage sent Ada home with thirty of his lab books filled with notes on his next invention: the Analytic Engine. It would be much faster and more accurate than the Difference Engine, and Ada was thrilled to learn of this more advanced calculating machine. She understood that it could solve even harder, more complex problems and could even make decisions by itself. It was a true “thinking machine.”5 It had memory, a processor, and hardware and software just like computers today—but it was made from cogs and levers, and powered by steam. For months, Ada worked furiously creating algorithms (math instructions) for Babbage’s not-yet-built machine. She wrote countless lines of computations that would instruct the machine in how to solve complex math problems. These algorithms were the world’s first computer program. In 1840, Babbage gave a lecture in Italy about the Analytic Engine, which was written up in French. Ada translated the lecture, adding a set of her own notes to explain how the machine worked and including her own computations for it. These notes took Ada nine months to write and were three times longer than the article itself! Ada had some awesome nicknames. She called herself “the Bride of Science” because of her desire to devote her life to science; Babbage called her “the Enchantress of Numbers” because of her seemingly magical math

There’s a way of triumphant accomplishment that comes from lowering dead or unwanted trees. (Not to say the joys of yelling, But that feeling fades pretty quickly once you look down and see unsightly—and very stubborn—Stump milling. If you hire a landscaper or arborist to chop down the trees, they typically leave the stumps behind, unless you pay a further fee. Stump-removal prices vary widely across the country and are supported by the diameter of the stump, but it typically costs between $100 and $200 to get rid of a stump that’s 24 inches in diameter or smaller. And that’s a good price if you’ve only got one stump to get rid of . But, if you've got two or more stumps, you'll save a substantial amount of cash by renting a stump grinder. A gas-powered stump grinder rents for about $100 per day, counting on the dimensions of the machine. And if you share the rental expense with one or two stump-plagued neighbors, renting is certainly the more economical thanks to going. you will need a vehicle with a trailer hitch to tow the machine, which weighs about 1,000 pounds. Or, for a nominal fee, most rental dealers will drop off and devour the grinder. To remove the 30-in.-dia. scarlet maple stump, I rented a Vermeer Model SC252 stump grinder. it's a strong 25-hp engine and 16-in.-dia. cutting wheel that's studded with 16 forged-steel teeth. this is often a loud, powerful machine with a classy mechanism , but it's surprisingly simple to work . But, before you crank up the motor and begin grinding away, it’s important to prep the world for the stumpectomy. Start by ensuring all kids and pets are indoors, or if they’re outdoors, keep them well faraway from the world and under constant adult supervision. Then, use a round-point shovel or garden mattock to get rid of any rocks from round the base of the stump [1]. this is often important because if the spinning cutting wheel hits a rock, it can shoot out sort of a missile and cause serious injury. Plus, rocks can dull or damage the teeth on the cutting wheel, which are expensive to exchange. Next, check the peak of the stump. If it’s protruding out of the bottom quite 6 inches approximately, use a sequence saw to trim it as on the brink of the bottom as possible [2]. While this step isn’t absolutely necessary, it'll prevent quite little bit of time because removing 6 inches of the Stump grinding with a chainsaw is far quicker than using the grinder. After donning the acceptable safety gear, start the grinder and drive it to within 3 feet of the stump. Use the hydraulic lever to boost the cutting wheel until it’s a couple of inches above the stump. Slowly drive the machine forward to position the wheel directly over the stump's front edge [3]. Engage the facility lever to start out the wheel spinning, then slowly lower it about 3 in. in to the stump grinding. Next, use the hydraulic lever to slowly swing the wheel from side to side to filter out all the wood within the cutting range. Then, raise the wheel, advance the machine forward a couple of inches, and repeat the method. While operating the machine, always stand at the instrument panel, which is found near the rear of the machine and well faraway from the cutting wheel. Little by little, continue grinding and advancing your way through to the opposite side of the stump. Raise the cutting wheel, shift into reverse, and return to the starting spot. Repeat the grinding process until the surface of the Stump removal is a minimum of 4 in. below the extent of the encompassing ground. At now, you'll drive the grinder off to at least one side, far away from the excavated hole. Now, discover all the wood chips and fill the crater with screened topsoil [4]. (The wood chips are often used as mulch in flowerbeds and around trees and shrubs.) Lightly rake the soil, opened up a good layer of grass seed, then rake the seeds into the soil [5]. Water the world and canopy the seeds with mulch hay.

Men stumbled away toward illusions in the brutal light. Men thought they were home, walking into their front doors, hugging their wives, making love. Still they walked. Men were swimming. Men were killing Mendez. Men were on the beach, collecting shells and watching their children splash. Their women stood naked before them, soft bellies, hands on ribs, breasts. Men hid their faces from a furious God. And they walked. A voice was heard in the light-shatter, saying “He’s going to die. Lay him down here and let him die. Keep walking.” The desert, out of focus and suddenly terribly sharp, burst white and yellow in their eyes. It tilted. Elongated. It was at an impossible angle! It tipped up towards the sun, and if they didn’t crawl, they would slide right off it and fall forever. It made noise: there were engines beneath the desert. It made evil grinding noises, mechanical humming. No, it was insectile, the screech of hunger and derision. The devils were under the rocks, spitting insults. The black head laughed. I believe in God the father, creator of heaven and earth. No, it did not fucking laugh—- it was silent as a graveyard out there. Just the crunch and slide, crunch and slide, of endless hopeless footsteps. Hundreds of footsteps.