Did you know? The first wearable pacemaker was invented by Wilson Greatbatch in 1956, when he accidentally used the wrong resistor in a heart recorder. This produced electrical pulses that matched the rhythm of a human heart. #fact #discovery #medicine

Did you know? Three months after Neil Armstrong landed on the Moon (July 20, 1969), the first Internet signals were sent out. Back then, it was called ARPANET, or Advanced Research Projects Agency Network. #fact #history #computing

Did you know? Many silent letters in English were added by 16th- and 17th-century scholars: - "debt" from Latin "debitum" (something owed) - "receipt" from Latin "recipere" (to receive/take) - "isle" from Latin "insula" (island, a word of different origin) - etc. #fact #language #history

Happy #FourthOfJuly! Today marks 250 years since America declared independence from Great Britain. 🟥⬜🟦 #IndependenceDay #fireworks 🎆

Did you know? The YouTube channel "SiIvaGunner" has a capital i in its name, not a lowercase L, and is thus pronounced "SEE-vuh-guhn-uhr." #fact #spelling #internet

Did you know? Water never expires. Instead, the expiration date on water bottles is for the bottle itself (since plastic can break down). #fact #liquid #manufacturing

Did you know? The Amazon logo's arrow points from the first letter to the fourth, meaning they have "everything from A to Z." It also represents moving forward and reaching goals. #fact #company #design

Did you know? PopCap Games, creator of Bejeweled and publisher of Chuzzle, was originally called Sexy Action Cool. #fact #games #company

Did you know? The total length of an average adult's blood vessels is about 60,000 miles (96,000 km), or ~2.4 times Earth's circumference. #fact #anatomy #humans

Happy #TauDay! Tau (τ) is twice the value of pi (π) and equal to a circle's circumference divided by its radius. The first few digits are 6.283185307. How many can you recite? 🤔 #math #holiday #celebration

Did you know? When an object falls to the ground, Earth also falls toward the object (Newton's third law). However, our planet is so much larger that we don't notice it. #fact #gravity #physics

Did you know? Cheez-It crackers aren't square; they're 26 by 24 millimeters (1.02 by 0.94 inches). #fact #food #geometry

Did you know? The word "alphabet" comes from "alpha" and "beta," the first two letters of the Greek alphabet. #fact #origin #words

Did you know? The fastest speed recorded on the German Autobahn is 268 mph (432 km/h), which a Bugatti Chiron came close to in 2021, at 259 mph (417 km/h): www.youtube.com/watch?v=7pg1... #fact #speed #highway

Did you know? The highest fall survived without a parachute is 10,160 meters (33,330 feet), achieved by Serbian flight attendant Vesna Vulović in 1972. #fact #worldrecord #aviation

Did you know? An electrocardiogram, used to measure heartbeats, is abbreviated ECG or EKG, the second of which comes from German "Elektrokardiogramm." It also avoids confusion with "echocardiogram" (heart ultrasound). #fact #medicine #vocabulary

Happy #FathersDay and first day of summer (winter in the Southern Hemisphere)! 👨‍👧‍👦🌞 #SummerSolstice

Did you know? The hardest Hangman word to guess is "jazz," according to 15 million computer simulations run by Jon McLoone in 2010. #fact #games #words

Happy #Juneteenth! Today marks 161 years since the end of slavery in America, and #ToyStory5 is coming out.

I've plotted the Mandelbrot set, a famous fractal, at @desmos.com: www.desmos.com/calculator/h... #math #recursion #geometry #complex #interactive #education

Did you know? In the TV show "iCarly", Gibby's full name is Orenthal Cornelius Hayes Gibson. #fact #television #characters

Did you know? Soccer was originally called "association football" to distinguish it from other football types. The name was formed by taking "soc" from "association" and adding "-er" (like with "fiver" and "tenner" for five- and ten-pound banknotes in the UK). ⚽ #fact #sports #naming

Did you know? "Run" has 645 definitions, the most of any English word (run a race, an errand, a program, amok, etc.). #fact #language #wow

Did you know? The German word for "speed limit" is Geschwindigkeitsbegrenzung (from Geschwindigkeit "speed, pace, velocity" + -s- + Begrenzung "limit, demarcation"). #fact #vocabulary #language

Happy #FlagDay! Two days ago, Elon Musk became the world's first trillionaire, with a net worth of $1.1 trillion. 💵

Did you know? Talking to yourself makes you smarter. #fact #psychology #selfcare

Did you know? If you start with one dollar and double it every day, you'll be a billionaire after 30 days (2^30 ≈ 1.07 billion). 💰 #fact #math #money

Did you know? Spaghetti and meatballs were invented by Italian immigrants in the US, not in Italy itself. 🍝 #fact #food #history

Did you know? Kevin MacLeod has composed over 2,000 songs since 1998. On average, that's over 70 songs per year or one every five days. #fact #music #dedication

Did you know? Dr. Seuss's "Green Eggs and Ham" has 50 unique words. #fact #books #literature

Did you know? The most common English letter is E, appearing in one out of every eight letters (~12.7%). #fact #language #frequency

Did you know? Sophia is a name of Greek origin, meaning "wisdom". It also appears in words like "philosophy" (from Ancient Greek φίλος (philos) "love" and σοφία (sophia) "wisdom", together meaning "love of wisdom"). #fact #names #history

Did you know? A 17-inch pizza is twice as big as a 12-inch pizza (because 17² = 289 is about twice as much as 12² = 144). #fact #math #food

Happy 82nd anniversary of #DDay!

This @desmos.com graph produces an electric field for a set of charged particles: www.desmos.com/calculator/3... #math #physics #interactive #electricity #education #simulation

Did you know? Facebook's logo is blue because Mark Zuckerberg, the site's founder, has red-green colorblindness, making blue the richest color in his eyes. #fact #internet #socialmedia

Did you know? The chance of you being born with your precise DNA sequence is one in 400 trillion. #fact #probability #science

Did you know? The most common English word is "the", making up about 7% of speech and writing. #fact #language #vocabulary

Did you know? "Eunoia" (yoo-NOY-uh) is the shortest English word with all five vowels, as well as the name of a book: en.wikipedia.org/wiki/Eunoia_...

Did you know? Computers can't generate truly random numbers. Instead, they use mathematical formulas, called PRNGs (Pseudo-Random Number Generators), to produce numbers that appear random. #fact #technology #programming

Happy #PrideMonth, everybody! 🏳️‍🌈

Did you know? George Washington almost joined the British Navy. #fact #history #president

Did you know? The #Backrooms started as a 4chan meme in May 2019, where they could be entered by "noclipping" out of reality. #fact #lore #liminal

Happy National #HamburgerDay! 🍔 Also, the #Backrooms movie will be in theaters tomorrow. 🍿🎬

Did you know? The highest US lottery jackpot ever won is $2.04 billion in Powerball, by Edwin Castro in November 2022. #fact #lottery #powerball

Did you know? The computer mouse was originally called the "X-Y Position Indicator for a Display System". 🖥️🖱️ #fact #computers #technology

Happy #MemorialDay to you all! 🌎🙏 (No US flag emoji, so this will do.)

Did you know? The first US president to serve two non-consecutive terms was Stephen Grover Cleveland, as the 22nd and 24th president. #fact #history #socialstudies

#Google has recently updated its logos:

Did you know? The German Autobahn's full name is "Bundesautobahn" (BAB), which translates as "federal motorway" and literally means "Federal Auto(mobile) Track". #fact #germany #autobahn #highway