Before he demonstrates an elaborate example of using a laser to push an object, The Action Lab gives an accessible overview of light physics and relativistic mass.
He describes the setup thus: "I make an apparatus in the vacuum chamber that can measure the push of light! And if it doesn't have mass how could it push things, and could you weigh light on a scale?"
He did some of the experiments with a 32,000 lumen flashlight, but he did not show the result with that on his apparatus. That's probably because it's almost impossible to film with the output of a 32,000 lumen flashlight in the shot.
• Can You Push Things With Light? (YouTube / The Action Lab)
I’m not an engineer, but I can’t stop watching this hypnotic and oddly satisfying video of tying rebar.
The Australian Acoustic Observatory project, described by its creators as a kind of “Google Street View of sound,” is a new acoustic sensor network of hundreds of microphones and digital audio recorders distributed across multiple remote ecosystems on the continent. The solar-powered system will record animal and natural sounds continuously for 5 years. According to […]
Is your brain a machine? Are your thoughts and feelings just malware of the mind? (And what “really” is a machine, anyway?) John and Eva referee the transhumanist fight of the century. In the blue corner, we have Eva meeting founder and Bryan Johnson, CEO of Kernel, straight from his office in LA. And in […]
There’s much ado about coffee brewing methods these days, but most of us – at least on the busy weekdays – just want our morning joe to be consistent, easy, and most of all, fast. If that sounds like anyone on your Christmas list, they’re going to get a lot of mileage out of the […]
Online shopping is going to be through the roof this month, and you’d better believe that hackers know it. If you’re going to invest in a virtual private network, now is the time. Especially when Windscribe VPN is offering its own holiday discount. At their current price point, it’s well worth jumping on the paid […]
Cheap massage chairs are a common Christmas gift, but we’re willing to bet they don’t get a lot of actual use from the people who could really use a massage. We’re talking about people with deep, chronic joint pain or anyone who does a serious workout on a regular basis. For that kind of soreness, […]