Because tungsten and gold have almost identical weights, fake gold bars and coins made from tungsten cannot be identified by the usual method of density testing, and ultrasound has to be used instead.

Everything is under Steuerung

Synthetic fiber sanding disc

What are some facts that make people say 'why do you know this'?

The speed of sound on Mars is about 250 meters per second. That’s slower than on Earth, where sound travels through the air at about 340 m/s.

log(👀) = log(👁️) + log (👁️)

#OTD in 1961, cosmonaut Yuri Gagarin became the first human to fly into space. His historic single orbit around Earth took only 108 minutes from ignition to landing.

“The human foot is a masterpiece of engineering and a work of art.”

- Leonardo da Vinci

Life tip: If you find a lost wallet you can put it in any US mailbox and they will send it back to the address listed on the driver's license for free.

Term of the day: Polar Orbit

Definition: An orbit with an orbital inclination of near 90 degrees where the satellite ground track will cross both polar regions once during each orbit.

One of the biggest bottlenecks in road work is soil compaction. Soil can’t effectively be compacted more than around a foot (30 cm) at a time. Any road work that affects the soil foundation can take months because of this.

Mechanical reasoning test.

The Earth's magnetic field is created by the movement of molten iron in the planet's core, and it protects us from the harmful effects of solar radiation.

Space fact:

The first artificial satellite in space was called “Sputnik”.

Engineering is about more than just technical skills. It requires a deep understanding of the world around us and a commitment to using our knowledge to make a positive impact. Let's continue to apply our skills and expertise to create a better world for everyone.

Amicable pairs:

3869 = 62² + 05² and 6205 = 38² + 69²

Machining brass with ease

What did the 90 degree angle say to the 270 degree angle

You are un-bearable

What is a severely out-of-date technology you're still forced to use regularly?

The earth’s circumference is about 25,000 miles. Its surface area is about 200,000,000 square miles and it weighs 6,588,000,000,000,000,000,000 tons.