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Fred's user avatar
Fred
  • Member for 9 years, 5 months
  • Last seen this week
  • Southern Hemisphere
1 vote

What would you call a sliding door that slides up and down and how would you make it's mechanincs?

1 vote

With the "plain old telephone system", would two neighbors be able to call each other privately?

1 vote
Accepted

What material can withstand continuous working temperature of 1000 degree Celsius?

7 votes

What are those large cylinder "tanks" attached to the outside of trucks for?

1 vote

Planes, lines and distances: looking for engineering problems

5 votes

Do kids under a certain age not hear the warning beeps that smoke detectors make when they are running out of battery power?

4 votes

If the Roman number system was so bad, how did the Romans build all that relative high-tech?

9 votes

What are the engineering principles for a train to get electricity from the railway

2 votes

Why are/were sewers made large enough for somebody to walk down in there?

1 vote

Why do the fan or blower of the Air Conditioner not face the coil flowing hot liquid?

2 votes
Accepted

How does a nuclear powered rocket engine work?

5 votes
Accepted

Is it OK for a 2 story house not have a column or pillar

4 votes
Accepted

How to make sure the material is titanium?

2 votes
Accepted

Basic Drilling/Production/Reservoir Engineering Terms

1 vote
Accepted

Why do normal tunnel boring operations not use the dirt (from the boring itself) for reinforcement rather than bringing it from other sources?

4 votes
Accepted

What is the meaning of negative exponents in SI units?

4 votes

They survived an elevator fall. How?

1 vote

Qualitatively how does the O-wind turbine function?

1 vote

In rock drilling, how does the drill pipe in horizontal directional drilling withstand the immense force?

4 votes
Accepted

Ideal funnel design for powders

2 votes

How to grind smooth hard rock to create a road surface

2 votes

Is it possible to generate energy from indoor draft by opening windows on opposite sides of the building?

0 votes

What is the most efficient way to remove the cardboard center piece from a roll of paper?

1 vote

How does punched card computer circuit design work?

1 vote

Why not drive an air source heat pump domestic heating system with an auto engine?

1 vote

Overhead cable vs batteries for vehicles

2 votes

Thai Cave Rescue-Using trace gas detection to locate chimney entrances

1 vote

How do solar balloons work at high altitudes?

3 votes
Accepted

Save loose soil from erosion on a slope

2 votes
Accepted

What is the entirety of breadth of road called?

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