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.
Anthony Atala, director of Wake Forest University’s Institute for Regenerative Medicine, is developing techniques to 3D print human organs for transplant using an individual’s own cells as the “ink.” That way, the transplanted organ won’t trigger the patient’s immune system to reject it as a foreign body. From National Geographic: (For example,) to create an […]
A Scottish team of animal biotechnologists announced this week they successfully introduced human stem cells into sheep embryos. Perhaps one day we will all have our very own baaing organ donors. The team are currently allowed to let the chimeric embryos develop for 28 days, 21 of which are in the sheep. While that might […]
Surfing on public Wi-Fi is convenient, but it’s far from safe. Whether you’re at a cafe or hotel, connecting to an unsecured network exposes you—and your personal information—to a host of hazards, including hackers, government spies, and trackers. Private Internet Access helps you navigate past these risks and tap into a safer, restriction-free internet, and […]
The web is vast, and while there’s room for everyone, competition is stiff when it comes to landing on that first page of a Google search. That’s why developers aren’t afraid to spend exorbitant amounts of time and money on search engine optimization (SEO) to ensure their sites rank higher than others. However, not all […]
Many of us enjoy the aesthetic of vintage electronics, but trying to use most hardware from the 1950’s isn’t necessarily practical. This is especially true where speakers are concerned. While most of us can appreciate the old-school feel of retro speakers, they have a hard time matching the convenience and power delivered by today’s Bluetooth speakers. […]