Veritasium visited Dr. Stephen Steiner at Aerogel Technologies in Massachusetts to learn about the wonders of silica aerogel, a solid that is only twice as dense as air. My sister gave me a small chunk of aerogel about 10 years ago and it's one of my favorite possessions.
How aerogel is made and why it's so cool
Video explains epidemic R-number through crocheting
Kathrine Frey Frøslie uses crocheting to show how quickly Covid cases increase as the R-number (spreadability) goes up. What a cool way to visualize it! Kathrine Frey Frøslie works as associate professor in Biostatistics, and runs the popular science knitting blog Statistrikk.no. The crochet work is made for the exhibition CoviDesign at Greve museum in… READ THE REST
Excellent 1966 Australian PSA on the switch from £sd to decimalized currency
Enjoy the delightful music and animation in this 1966 FAQ explainer video to get Australians used to the switch from pounds, shillings, and pence, to dollars and cents. [Via r/ObcureMedia] READ THE REST
How tri-color e-ink works
E-ink displays are usually monochrome, but tri-color displays are starting to become more common and affordable. The Adafruit video explains how tri-color e-ink displays work. READ THE REST
This weighted blanket can stamp out your sleep troubles, and it's under $50
You've tried everything from mental exercises and relaxations to straight-up pharmaceuticals to combat your debilitating sleep issues. Who would've expected that that one of the best ways to get a sounder sleep was just a bit more weight? With sales surging and medical findings starting to back up the claims, now's a perfect time to… READ THE REST
This 11-course bundle will teach you how to build a killer Android app
As you scroll through hundreds of apps on the Google Play store, you might feel like every great app idea has already been done. Just remember that good ideas pop up all the time, and there's always something new to be created and explored. To accomplish this as app creator, you'll have to know the… READ THE REST
This foldable chair is perfect for outdoor adventures or just lounging at home
When you're out camping, at the beach, or even at a local park, you've got a handful of seating choices to choose from. You can go minimalist and just bring a towel, but that's almost universally uncomfortable. You can bring a cushion for a little more (but not much) comfort. Or, you can shell out… READ THE REST