by msander | Jun 6, 2019 | Gr. 11-12 Physics
We might not have unified electrodynamics until 1865, but we’ve known light was a wave since the original double-slit experiment in 1801. Let’s talk about diffraction and wave...
by msander | May 17, 2019 | Gr 9-10 Science
The expanding universe is a complicated place. During inflation the universe expanded faster than light, but that’s something that actually happens all the time, it’s happening right now. This doesn’t violate Einstein’s theory of relativity...
by msander | Apr 11, 2019 | Gr 4-6 Science & Tech, Gr 9-10 Science, Gr. 11-12 Physics
We have just seen the first image of a black hole, the supermassive black hole in the galaxy M87 with a mass 6.5 billion times that of our sun. But what is that image really showing us? This is an awesome paper on the topic by J.P. Luminet: Image of a spherical black...
by msander | Apr 10, 2019 | Gr 4-6 Science & Tech, Gr 9-10 Science
Black holes have been mysterious and elusive — until now. Astronomers using the Event Horizon Telescope (EHT) have, for the first time, photographed one. Source: ‘We’ve now seen the unseeable’: Black hole photographed for the first time | CBC...
by msander | Jan 30, 2019 | Gr 4-6 Science & Tech, Gr 9-10 Science, Gr. 11-12 Chemistry, Gr. 11-12 Physics
How do astronauts survive the deadly radiation of deep space? NASA is still figuring out how to protect astronauts from cosmic radiation — like plastic shielding and magnetic deflectors. Learn more about National Chemistry Week here!...
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