On March 7, 1876, 29-year-old Alexander Graham Bell receives a patent for his revolutionary new invention: the telephone.

Starship meeting

How to open a can using friction
https://youtu.be/zd2vBk1X2-o

An earthing system connects specific parts of an electric power system with the ground, typically the Earth's conductive surface, for safety and functional purposes.

International standard IEC 60364 distinguishes three families of earthing arrangements, using the two-letter codes TN, TT, and IT.

The first letter indicates the connection between earth and the power-supply equipment (generator or transformer):

"T" — Direct connection of a point with earth (French: terre)
"I" — No point is connected with earth (French: isolé), except perhaps via a high impedance.
The second letter indicates the connection between earth or network and the electrical device being supplied:
"T" — Earth connection is by a local direct connection to earth (French: terre), usually via a ground rod.
"N" — the earth connection is supplied by the electricity supply network, either separately to the neutral conductor (TN-S), combined with the neutral conductor (TN-C), or both (TN-C-S). These are discussed below.

Happy Pi Day!

169 is the reverse of 961. The same is true of their square roots...

√169 = 13 and √961 = 31

Space fact:

On Venus, it snows metal and rains sulfuric acid.

“The engineer’s first problem in any design situation is to discover what the problem really is.”
- Unknown

The Fibonacci Sequence is the series of numbers:

0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181, 6765, 10946, 17711, 28657, 46368, 75025, 121393, 196418, 317811, …

The next number is found by adding up the two numbers before it.

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.

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