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.
Yesterday, 12 adults in Cologne, Germany climbed into special beds where they will remain for 60 days to help scientists better understand the impact of longterm space flights on the human body. The Artificial Gravity Bed Rest Study is a joint program from European Space Agency (ESA) and NASA. From the ESA: …They will be […]
I’ve had quite a few fun afternoons playing with dry ice from making spooky fog in the kitchen to exploding plastic bottles in the yard. But I’ve never had the opportunity to pour hot lava over dry ice. In this video, the lava is 1400 °C and the dry ice is -78C°. So cool! And […]
If you’re going to pursue a career in graphic design, videography or web development, there are some essential tools you need to have – and all of them are included in the Adobe Creative Cloud. And whether you need to brush up on Illustrator, Photoshop or InDesign – or are a beginner to them all […]
Got a vision to put on film? The Film & Cinematography Mastery Bundle shows you how to put it there, with classes covering gear, lighting, production – even marketing. Even in this age of indie cinema, filmmaking can seem like an exclusive world for the chosen few. But with the right eye – and the […]
If you’re into tech at all, you should definitely consider unleashing your inner tinkerer on a Raspberry Pi board. If you’re intimidated, don’t be. It’s a statistical probability that people half your age have created cooler things than you can imagine with the versatile kit. Not sure where to start? The Complete Raspberry Pi 3B+ […]