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Private Notes
A head-vaporizing laser with a perfect wavelength detecting sub-proton space-time ripples.
We talk about all the potentially challenging situations autonomous cars could get into but not about how human drivers are not very good. Tens of thousands die on the roads every year in collisions, most of which could be prevented by autonomous vehicles.
Sponsored by BMW
I wanted to make a video about autonomous cars for some time but I hadn't had the opportunity. The self-driving technology is already at a state where it can save lives if only it were more widely implemented.
Spinning magnets near copper sheets create levitation!
Original Title: Water on the Moon?
For a long time we thought the Moon was completely dry, but it turns out there are actually three sources of lunar water.
How the brain works, how we learn, and why we sometimes make stupid mistakes.
The definitive answer about the direction water swirls in two hemispheres
I didn't say it explicitly in the video, but in my view the Bayesian trap is interpreting events that happen repeatedly as events that happen inevitably. They may be inevitable OR they may simply be the outcome of a series of steps, which likely depend on our behaviour. Yet our expectation of a certain outcome often leads us to behave just as we always have which only ensures that outcome. To escape the Bayesian trap, we must be willing to experiment.
Can you solve these four rotation-related riddles?
The solution to 4 rotation-related riddles, including the mystery cylinder, bike pedal pulling puzzle, track problem, and train part going backwards. Thank you to everyone who responded, liked, shared, or made a video response.
I have the photic sneeze reflex so I sneeze when I look at bright light.
In a zero-g plane I experimented with flames and slinkies with surprising results.
Original Title: The American Kilogram
The US signed the metre convention and bases all customary units on SI standards. As an aside, the Utah constitution from 1895 required the metric system to be taught in schools. This requirement was repealed in 1987. ¯_(ツ)_/¯
Original Title: The Next Mission to Mars: Mars 2020
In 2020, NASA will send a new rover to the Martian surface with one of its objectives to search for evidence of ancient life on the planet. I made this clip as a correspondent for Bill Nye Saves the World on Netflix.
How do you measure big forces accurately? By calibrating your force transducer on the world's biggest weight - 1,000,000 pounds of force. This machine ensures planes don't break apart, jets provide required thrust, and rockets make it to their destination.
Scientists have JUST published this new observation. On January 4th, 2017 they detected the merger of two black holes 3 billion light-years away. This marks the furthest detection they've been able to make and increases confidence that these events will be seen with increasing frequency as the LIGO interferometers become more sensitive to low amplitude gravitational waves (as sources of noise are eliminated).
The intensity of sunlight on Earth is about 1300 Watts per square meter. When you focus the sun's rays using a magnifying glass (or in this case sphere of water) you can increase the intensity roughly ten thousand fold. This increases the temperature of wood to its autoignition point starting the reaction with oxygen in the atmosphere. By protecting the hot embers and adding more energy and fuel, you can get these hot coals to start a roaring fire.
Original Title: Seeing the Invisible
This is what the world would look like if you could see invisible air currents, temperature gradients, and differences in pressure or composition of the air.
On a stream of water you can levitate light balls of all sizes and even disks and cylinders. The mechanism is not the Bernoulli effect...
In 2018 the kg will be defined by Planck's constant, not a hunk of metal.
Original Title: ECLIPSE 2017
The total solar eclipse from Madras, Oregon on August 21, 2017. As the moon passed in front of the sun turning day to night and revealing the sun's corona, apparently all I could think to say was 'Oh my goodness!'
How Schlieren imaging works in color, black and white and slow-mo.
Original Title: First Ever Light & Gravitational Wave Cosmic Event!
The merging of two neutron stars was detected by gravitational waves and then by telescopes in all parts of the electromagnetic spectrum. This is a historic detection as it demonstrates:
- the first gravitational waves detected from inspiraling neutron stars
- the first joint observation by gravitational wave and electromagnetic wave astronomy
- identification of a gamma ray burst in conjunction with merging neutron stars
- how gravitational waves and gamma rays can be used together to locate their source
All evidence so far indicates that the data support General Relativity.
Original Title: Your Amazing Molecular Machines
These are the molecular machines inside your body that make cell division possible.
I got to drive the world's first car (replica), patented by Benz in 1886
Increasing entropy is NOT the only process that's asymmetric in time.
