Sunset on Mars over Gusev Crater captured by NASA's Spirit rover. Credit: NASA/JPL-Caltech/Texas A&M/Cornell
The most fun way to learn something new everyday.
15,051 followers 3 following 1,023 posts
view profile on Bluesky
Sunset on Mars over Gusev Crater captured by NASA's Spirit rover. Credit: NASA/JPL-Caltech/Texas A&M/Cornell
Something about squares
A prediction from 70 years ago.
*Compact* Color TV Tape Recorder, the 1960s.
I thought the bug was fixed...
Microsoft Windows Task Bar from 1995-2022
Jevons Paradox is an economic theory stating that as the efficiency of a resource improves, the overall consumption of that resource increases rather than decreases.
Entirely accurate portrayal of the engineering department:
From this day on, I keep the situation under control!
☀️ What is a payback period for residential solar? 10,000 kWh per year home requires 6 kW solar system with cost about $2.85 per watt, or $17,100 ($11,970 after incentives). Making about 10,200 kWh per year (in CA) can save $2,450 in one year. Thus payback period is ~ 5 years.
What number do you see?
It would take over an hour for a heavy object to sink 6.7 miles down to the deepest part of the ocean.
The planet Neptune as captured by the Voyager 2 spacecraft, with a close-up of latitudinal clouds that are about 50 km (30 miles) high at their tallest. Credit:NASA/JPL/Justin Cowart
🇯🇵 Japan has opened its first osmotic power plant, in the south-western city of Fukuoka. Only the second power plant of its type in the world, it is expected to generate about 880,000 kilowatt hours of electricity each year.
In 1962, Volvo gave away the patent for their revolutionary three-point seat belt to save lives Their seatbelt is now the standard for all cars
Useful tip
The roof on an oil storage tank is not attached to the walls, but floats on the surface of the oil to avoid creating a space for flammable vapors to accumulate and explode.
James Webb telescope captures surreal images of Jupiter's auroras. Credit: NASA, ESA, CSA, Jupiter ERS Team; image processing by Judy Schmidt.
How to use an iPhone to test for blown fuses
Save me
Affiliated link amzn.to/4lBoLQ1
U-shape level
Remote control lawn mower
Hollow wall anchor
People who wear all black are more likely to be seen as reliable, serious, and confident.
"The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom." - Isaac Asimov (1920 - 1992)
These are the anchor chains of the RMS Mauretania, just look at the size compared to the workers!
Gold is the most malleable and ductile of all metals; a single gram can be beaten into a sheet of 1 square meter, or an ounce into 300 square feet.
The ancient Egyptian pyramids weren't built by slaves as commonly portrayed. Instead, they were actually constructed by paid laborers and skilled artisans. These workers were also provided with good food, housing and the best medical care that was available at the time.
Nutcracker
A safety notice on an AH-1 Cobra Attack Helicopter
Reinventing the shower
Legend
For most engineering, scientific, and everyday computer calculations, only about 15 to 17 decimal places of Pi are used, because this matches the precision of double-precision floating-point numbers, the standard format for numerical calculations in modern processors.
World’s first nuclear fusion plant being built in US to power Microsoft data centers. Called Orion, the project is expected to connect to Washington’s primary power delivery networks.
Water gun adapter
Today, The International Space Station (ISS) orbit was raised by 1.7 kilometers to an average altitude of 416.7 km above Earth.
IP68 connector
A prediction about phones in 1963
Really?!
Last image captured by the Opportunity Mars Rover 😔
While we’re still figuring out life on Earth, Voyager 1 is 15 billion miles away, cruising on 69KB, an 8-track, and 1977s Fortran like it’s nothing.
Office life before the invention of AutoCAD and other drafting softwares
😂
These () are parentheses These [] are brackets These {} are curly braces
Albert Einstein's report card from university
Useful tips
Astronomers have discovered the most massive black hole yet – more than 10,000 times as massive as the supermassive black hole at the centre of the Milky Way, and around 36 billion times the mass of our sun.
Pluto’s ice mountains. Frozen plains and layers of atmospheric haze backlit by a distant sun, as seen by the New Horizons spacecraft. Credit: NASA/JHUAPL/SwRi
Saturn and its moons, observed by Voyager 1 in 1980.
leave ∞ alone!
During WWII, Volkswagen produced wood-burning cars called "Holzbrenner" due to fuel shortages. They ran on flammable gas produced by heating wood, not by burning it directly.
Leicester, England 1954 Cityscape of Leicester in January 1954 from the roof of the Colleges of Art and Technology looking across houses towards Filbert Street and the power station beyond - Leicester Mercury Photo by Henk Heijmans
The International Space Station is closer to Earth than San Francisco is to Los Angeles
Drill and countersink tool for sink drain
The human eye is efficient enough to see a candle flame in darkness from 1.7 miles (2.76 km) away.
World's toughest problem
Engineers and designers sometimes leave messages on circuit boards
Interesting: Nikola Tesla's last message to his mother: "All these years that I had spent in the service of mankind brought me nothing but insults and humiliation."
Useful tip
The moon has moonquakes.
The moon has moonquakes.
Saudi Arabia has a giant laser in the middle of the desert that helps lost travelers find water.
Scientists at the Allen Telescope Array always keep champagne in their fridge in case they find signs of extraterrestrial life.
Mechanical reasoning test. Which system requires the least force at F to lift the weight?
A ham radio operator in 1963 using a Teletype Model 15 paired with a Morse key. The Teletype Model 15, first introduced in the 1930s, was a rugged and reliable electromechanical typewriter that could send and receive text over radio waves using radioteletype (RTTY).
Understanding electronic components function.
I took an electric cab today. It died before I reached my destination. Driver looked at me and said …. No charge.
The “Face on Mars” captured by NASA’s Viking 1 orbiter in 1976 (left) and Mars Global Surveyor in 2001 (right)
Mathematical puzzle.
The door of Lawrence Livermore National Laboratory in California, USA, 1979. This door was 8ft(2.4m) thick, nearly 12ft (3.7m) wide and weighed 97,000lbs(44000kg)
When generating wind power, cold winds produce more electricity than hot winds at the same wind speed.
Useful tip
Preferred methods of contacting us are in order of preference: 1. Email 2. Email 3. Email 4. Email 5. Text message 6. Text message . . 100. Call
On this day, 25th of July 2000, Air France Flight 4590 crashes shortly after takeoff. Today, it's the 25th Anniversary of the Concorde crash in France
The entire British Concorde fleet in one picture, January 21, 1986, at London's Heathrow Airport
Can we decide once and for all, what is this thing called?
Nutcracker
Grafting pruner
A 1940's experiment showing how cars are safe from lightning.
Mercury streamliner passenger train
Legend has it that Albert Einstein made up this riddle when he was a kid. Using the 15 clues above, can you figure out who owns the fish?
What is EV, BEV, HEV, PHEV? Here’s your guide to types of electric cars. EV and BEV: electric vehicles and battery electric vehicles HEV: hybrid electric vehicles PHEV: plug-in hybrid electric vehicle
Useful tip
Neil A. backwards is 👽
Life tip: using the windows + V key after ctrl + C will bring up the last 20 things you have copied.
An old Mig 15 fighter jet repurposed to defrost frozen railways in 1970's Czechoslovakia.
Interesting fact: the human brain runs on 20 watts of energy, enough to power a very bright light bulb...
Spark plug thread repair
Dovetail jig
Diamond has exceptional heat conductivity (better than copper)
The optimist says: “The glass is half full.” The pessimist says: “The glass is half empty.” The engineer says: “The glass is twice as big as it needs to be.”
China's astonishing Maglev train Is faster than most planes, hitting 620 km/h in just 7 seconds
666 = 1⁶ - 2⁶ + 3⁶
The IT engineer says: “Hey guys, I have an idea, how about we all get out of the car and get back in”