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Marco
  • Member for 11 years, 11 months
  • Last seen more than 7 years ago
10 votes
1 answer
22k views

How to find out the maximum radius of a hole that can keep water stay in a container by water viscosity?

4 votes
3 answers
475 views

What is the difference between material fatigue test with 1 sec cycle and 1 hour cycle?

4 votes
2 answers
1k views

Why my simple electromagnetic experiment does not work?

3 votes
1 answer
660 views

Can we tell from periodic table that which materials are ferromagnetic?

3 votes
2 answers
2k views

Is it right to cut a slot on some material before bending?

2 votes
2 answers
13k views

Why I will feel colder when I get out from a swimming pool? [duplicate]

2 votes
2 answers
670 views

Why water will stay on a piece of toilet paper?

2 votes
2 answers
10k views

How does a vacuum oven work?

2 votes
1 answer
240 views

Why is the Earth self-rotating? [duplicate]

2 votes
2 answers
278 views

Which is a more effective cooling method?

2 votes
3 answers
8k views

Is squared motor gearbox ratio proportional to inertia ratio?

2 votes
1 answer
218 views

How to calculate the amout of time for oil to get out from a pneumatic cylinder?

2 votes
4 answers
4k views

Can we have air flow without air noise?

1 vote
1 answer
576 views

May I know how a vortex tube works? [duplicate]

1 vote
1 answer
198 views

How DC and AC relays works?

1 vote
1 answer
2k views

Where I can find a torsional stiffness table for different types of stainless steels?

1 vote
0 answers
45 views

Why put something in the middle of the pan would prevent soup coming out during cooking? [duplicate]

1 vote
1 answer
4k views

Would two Neodymium magnets stick together with twice the power?

1 vote
0 answers
27 views

In practical, how to find the friction of rubber vs plastic? [duplicate]

1 vote
2 answers
228 views

How to find out the compress happen when some force act on water/oil/air?

0 votes
0 answers
216 views

How does a treadmill incline mechanism work? [duplicate]

0 votes
1 answer
7k views

How does the radius and length of a pipe affect vacuum performance?

0 votes
1 answer
92 views

How does a small radius connector affect gas flow?

0 votes
1 answer
4k views

Why hair dryer can heat up the air (kinetic and internal energies)?