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11 votes
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Mexico City’s metro system is sinking fast
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Norwegian bridge collapsed ten years after it was built – all because designers focused too much on making it look good
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Windows keep falling off skyscrapers. Why?
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How do fish ladders work?
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What Boeing did to all the guys who remember how to build a plane
54 votes -
Ferrari patents inverted I6 hydrogen engine with electric turbocharging
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Trains on the Moon
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Tesla's gear-shifting problems known long before Angela Chao's death
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Boeing is withholding key details about door plug on Alaska 737 Max 9 jet, NTSB says
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Spacesuits need a major upgrade for the next phase of exploration
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What Boeing’s door-plug debacle says about the future of aviation safety
13 votes -
Liberal visions and boring machines – The early history of the Channel Tunnel [the railway tunnel connecting the UK to France]
4 votes -
Zero emissions heat technologies for industry
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Faroe tunnel has opened up more than 150m below the Atlantic, boasting a six-mile-long art installation complete with its own spectral soundtrack picked up by car radio
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This is why we don’t recycle wind turbine blades
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Balancing cube
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The insane engineering of the space shuttle
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Interview with Lanny Smoot
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Engineering question about rust free steel construction
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16 votes -
Iceland battles a lava flow – countries have built barriers and tried explosives in the past, but it's hard to stop molten rock
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Electric vehicles: can 'lightweighting' combat range anxiety?
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Astrobotic Technology says its Moon landing attempt is in jeopardy because of an engine problem
29 votes -
Oblique wing aircraft - Could this change air travel forever?
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The fascinating engineering behind electric trains
17 votes -
The West vs Asia: what drivers are taught about motorcycle brakes
I've studied for motorcycle driving licenses in both my home country in Europe, and my work country in Asia. Something that really stood out to me was what each country said about braking. This...
I've studied for motorcycle driving licenses in both my home country in Europe, and my work country in Asia. Something that really stood out to me was what each country said about braking. This wasn't just advice or anecdotes, it appeared on each formal theory test.
Europe: Front brakes are the strongest, they are your go-to in an emergency. Use front brakes to stop, and rear brakes to slow gently.
- https://bikesaint.com/blogs/motorcycle-safety/braking-on-a-motorcycle
- https://www.cycletrader.com/blog/2023/05/15/when-should-i-use-the-front-rear-brakes-on-a-motorcycle/
Asia: Rear brakes are the strongest, front brakes are deliberately weaker. This is because braking too hard on the front is very dangerous, you'll catapult yourself over the handlebars as the rear half of the bike still has momentum.
Direct translation of exam question:
Which of the following is wrong about using a motorcycle brake?
A use both front And rear brakes
B Front wheel brake first
C rear wheel brake first
D Do not use the front brake too early
Answer B
Look at the problem, to choose " wrong approach ", of course, is to choose " first use the front wheel brake ". The car is moving forward, then the use of front wheel brake, in the role of inertia, easy to cause rollover, we should pay attention to safety!
I guess my overall question is, what are the underlying approaches to brake engineering here? Are either of them 'more correct' or is it a case of different priorities at play?
26 votes -
NASA's 3D-printed detonation engine revs up for four minutes in breakthrough test
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Copenhagen is moving away from concrete and asphalt and towards softer, “spongier” settlements that work with the natural flow of the water cycle
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Sergey Brin's airship gets US FAA clearance
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Should airships make a comeback?
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Why Silicon Valley is here. One radio engineer had a plan. And it worked.
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Taliban bringing water to Afghanistan’s parched plains via massive canal
32 votes -
Backward compatibility, Go 1.21, and Go 2
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Illegal medical lab containing bioengineered mice and infectious agents including HIV and herpes discovered in Fresno, California
32 votes