Engineering is the discipline, skill, and profession of acquiring and applying scientific, economic, social, and practical knowledge, in order to design and build structures, machines, devices, systems, materials and processes.

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Is it technically possible to terraform Mars in as little as 480 years? [closed]

I've seen this image posted as a argument against spending money on "useless" things and rather focusing on our efforts to terrafrom Mars. What I'd like to know, if the technologies presented, ...
27
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1answer
779 views

Were Roman engineers required to stand beneath their bridges as they were tested?

"When Roman engineers built a bridge, they had to stand under it while the first legion marched across. If programmers today worked under similar ground rules, they might well find themselves ...
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5answers
90k views

Is this tealight-flowerpot heater more efficient than just tealights?

This article at the Daily Mail describes a small heater based on tealights and flowerpots. It claims that [the system] "make[s] the heating more efficient" (I assume in comparison to just ...
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0answers
334 views

Does “liquid-injection damp-proofing” work to water-proof walls?

There are technologies for sale, especially in Germany, to drill holes in the walls of a cellar, and inject into the concrete or masonry a liquid, such as Sodium Silicate The manufacturers promise ...
13
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1answer
616 views

Did big projects used to get finished on time and on budget?

Big projects (software, engineering, architecture etc.) are plagued by cost and time overruns, or so it is widely thought. Nicholas Taleb argues in Antifragile that this is a modern phenomenon: ...
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3answers
17k views

Does a turbo-charged engine require a “cooling down” period?

Some people are saying that after having driven a car with a turbo-charged engine, you need to let the engine run for several seconds (or even minutes) before switching off the engine. But nobody is ...
14
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2answers
3k views

Do Möbius strip conveyor belts last longer?

According to Wikipedia: Giant Möbius strips have been used as conveyor belts that last longer because the entire surface area of the belt gets the same amount of wear... (No citations given.) ...
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3answers
2k views

Can you harvest energy from radio transmissions?

This video gives instructions on building a circuit to harvest energy from radio waves in the air using some pretty straightforward circuitry. The creator has another video showing such a circuit ...
11
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0answers
434 views

Instant, painless amputation via high-pressure steam

Several years ago, a friend of mine who had a long career as a commercial/industrial plumber related an anecdote about a colleague who was working at a power plant. He was in the vicinity of a ...
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1answer
4k views

Does wearing a helmet cause/aggravate hair loss?

A person I know (and his colleagues) does not wear his civil engineers helmet because they believe that it causes or contributes to hair loss. An ehow post also makes the same claim regarding ...
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2answers
5k views

Do you need to break in new engine on a car/bike for first 1,000 km by driving slowly and otherwise following manual's advice?

Normally car manuals say to let the car break in gently, not accelerating or breaking fast for first 1,000 km or driving below 80km/h. Is that really necessary in today's world? Is there any proof ...
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2answers
1k views

Was NASA’s Mars Climate Orbiter lost because engineering teams used different measuring units?

I read in a book that NASA's Mars Climate Orbiter was lost on September 23, 1999, at a cost of $125 million, because one engineering team used metric units, while another one used inches for a key ...
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3answers
2k views

Can you improve a car's engine by driving the car fast?

Many car enthusiasts claim the following: take 2 identical cars (equal horse power, torque etc). give one car to an old person who only drives it slowly give the other car to the car enthusiast ...
8
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0answers
627 views

Is a proposal to build an artificial mountain being seriously considered?

Thijs Zonneveld, a former cyclist, made a joke that a 2,000m high artificial mountain should be created in the Netherlands. Now, the mass media are reporting that it is being seriously considered: ...
2
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2answers
706 views

Is there anything inexplicable about how the WTC Twin Towers collapsed? [duplicate]

Possible Duplicate: On 9/11, was Building 7 destroyed in a controlled explosion? Having just watched the movie Zeitgeist, I'm a bit unsettled because I don't know how to refute the idea ...
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2answers
1k views

Could One Man Have Built The Coral Castle?

Supposedly, just one man built the Coral castle. Jilted by the woman who would be his wife, and miraculously recovering from a terminal case of tuberculosis, Edward Leedskanlin built the structure in ...