The white circles in this gif travel in a straight line across the diameter of the black circle. In the process, they accelerate toward the center and decelerate away with the velocity of a swinging pendulum.
Here's another colorful illusion with the same pendulum movement of the circles:
Warning: staring at the gifs too long may cause flashbacks to playing Tempest:
Multiplying large numbers before calculators led to a number of ingenious inventions to make things easier, like these Genaille-Lucas rulers demonstrated by the fine folks at DONG. Via manufacturer Creative Crafthouse: In the days before calculators, methods of simplifying calculations were of much interest. In 1617 Napier also published a book describing a method to […]
YouTuber Dani Ochoa says she’s a “girl with too much time on her hands,” but I disagree. I think figuring out the math formula to play the Star Wars “Cantina Band” song with just a paper and pencil is exactly what she should be doing with her time. Listen to this and compare: (reddit)
Mathematician Hannah Fry explains the “Ham Sandwich Theorem,” a mathematical concept that says that even the most poorly constructed sandwich can be cut exactly in half with only one straight cut of a knife.
Python is one of the most popular and versatile programming languages used by developers today, making it an ideal first choice for those looking to kickstart a career in programming. While you could go back to school or sign up for a pricey coding bootcamp, you can learn the essentials of coding with Python at […]
Going back to school isn’t necessarily an option for everyone. Between the time commitments and steep tuition rates, there are obstacles aplenty as far as furthering education is concerned. However, that’s not to say it’s impossible to learn new skills. Excel with Business lets users access thousands of hours of online learning in Microsoft, business, technology, […]
More often than not, you won’t see an accident coming, which means it pays to be proactive and ensure you have the right tools on-hand before you need them. Whether you find yourself in the middle of a power outage or having car trouble at night, you can make sure you’re still capable of navigating […]