World of Engineering
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On Mar 16, 1926 – History of Rocketry: Robert Goddard launches the first liquid-fueled rocket, at Auburn, Massachusetts.
Fleas can accelerate 50 times faster than a space shuttle.
Interesting mathematics:

The powers are the same as the digits, but in reverse order:

48625 = 4⁵ + 8² + 6⁶ +2⁸ + 5⁴
If you ever wondered how to read tires.
3³⁰ + 3³⁰ + 3³⁰ =
Anonymous Quiz
32%
3³¹
7%
3³²
17%
3³³
45%
3⁹⁰
Two scientists walk into a bar. One asks for H2O, the second asks for H2O, too. Which scientist dies?
Anonymous Poll
5%
First
55%
Second
26%
No one
14%
Both
In a letter dated March 20, 1800, Alessandro Volta first announced the invention of the electric battery.
Induction motor model: from CAD file to 3D presentation, no code needed.
https://youtu.be/o4qZ3udnVzM
World of Engineering Quiz:

Which of the following easily adapt itself to store electrical energy?
Anonymous Quiz
24%
Passive dielectric
33%
Superconductor
20%
Active dielectric
23%
Polar molecules
301 is the reverse of 103. The same is true of their squares: 301² = 90601 and 103² = 10609.
World of Engineering Quiz:

What resistance is needed to cause a 20A current flow because of a 100V battery?
Anonymous Quiz
13%
0.2 Ω
9%
120 Ω
69%
5 Ω
9%
2000 Ω
Interesting:

Six weeks lasts exactly 10! seconds.
Interesting:

Over 100 billion neutrinos pass unnoticed through your head every second!
World of Engineering Quiz:

You are shown 2 cylinders – one is made of gold and hollow, the other one is made of alloy and solid. Both have the same weight, shape, and are colored in black. How can you figure out which cylinder is the golden one, without scratching the paint?
Which type of valve is an electrically actuated valve for hydraulic or pneumatic fluid control?
Anonymous Quiz
9%
Needle valve
27%
Piston valve
9%
Pinch valve
55%
Solenoid valve
World of Engineering Quiz:

Which of the following is not a software development process model?
Anonymous Quiz
18%
Waterfall model
16%
Spiral model
28%
Risk Identification model
39%
Non of the above