Incandescent lights work by turning heat into light. You run an electric current through a filament, the filament heats up, and as it does, it starts to glow. The basic element has been around since 1809. The trick is finding material for a filament that will get hot enough to glow, but won't destroy itself too quickly. In fact, that's really the breakthrough Thomas Edison brought to the table in 1879. His carbonized bamboo filament lasted for 1200 hours—long enough to make the investment in a light bulb worth it. According to sources I found in the Wisconsin Historical Archives while researching my upcoming book on the past, present, and future of electricity, one of Edison's bulbs cost the equivalent of $36 in 1882.
This is not one of the earliest Edison bulbs. It's a later model, with a tungsten filament, dating to 1912. It was found in a time capsule at NELA Park, the General Electric headquarters and research laboratory that was opened that year. There were five light bulbs in the time capsule. This is the only one that GE engineers were able to get to light up. In the video, you can see it faintly glowing, 100 years after it was squirreled away.
Artists Jeff Louviere and Vanessa Brown explore cymatics, the study of wave phenomena and how they are represented visually. Using black-colored water, a laptop computer, and a modified guitar amp, they captured “portraits” of the 12 notes in the chromatic scale. From my sister-in-law Heather Sparks’s profile of their project in Nautilus: In each (“portrait”), […]
Yesterday’s science-by-press-release announcement that a research team had made a “breakthrough” in treating ALS thanks to funds raised in last year’s viral ice-bucket challenge turns out to be vaporware: the gene identified was already known to be implicated in ALS, but only affects 3% of cases, and the new refinement in the research suggests some […]
New research on trends in adult human height over the last century confirm that, no surprise, humans are getting taller overall due to better nutrition and disease control. However according to the health science group Non-Communicable Diseases Risk Factor Collaboration (NCD-RisC), the gain in adult height varies dramatically by country. From their paper, published in […]
Those of us who love music wish we could listen to it 24/7. But it’s impossible when we’re trying to converse with our friends, or when are swimming in the local pool.That is, until now. The KOAR Bone Conduction Bluetooth Headset, now 48% off, has changed the audio game.Made with lightweight titanium memory metal, this headset boasts patented bone conduction technology to transport sound […]
It’s one thing to enjoy dinner at home and a nice glass of Cabernet Sauvignon with your best friend, Netflix, but it’s another thing entirely to make that meal from scratch and get that wine delivered right to your doorstep.But what if we told you there’s a way to make this possible? To keep your social life, […]
Having to pack and drag your stuff through security can put quite the damper on your vacation plans. Thankfully, we’ve got your back with one way to make traveling more painless: the Jumper Overnighter Travel Bag.This compact bag is so lightweight that you can effortlessly carry it, and fit it into any overhead compartment. But just […]