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The temperature of the cosmic microwave background can be used as a universal clock.

It's actually Act 2, Scene 1 and is spoken by Polonius.

Oblate spheroids are round.

> Heathrow is massive and uses a lot of power (1-2MWh/day) It's 3 orders of magnitude more: 1-2GWh/day. https://www.heathrow.com/content/dam/heathrow/web/common/doc...

Just one ^n. Supermassive black holes are expected to have completely evaporated by 10^100 years.

It's not really whether it makes scientific sense or not, it's just that it's so very highly improbable (really, really improbable) that other explanations make more sense: the vid…

The use of a space as a thousands separator has been around since the 1940s as recommended by the International Bureau of Weights and Measures and it was what we used when I was a …

How can you tell from analysis of the physical circuit what assumptions the designer made about the flow of current? Surely the components (electrolytic capacitors, diodes, transis…

I think the problem with gas stoves is the nitrogen dioxide they produce. Do you have a meter for that?

They have different magnetic susceptibilities. Gold is diamagnetic (repelled by magnetism); tungsten is paramagnetic (attracted). A strong magnetic field (neodymium magnets) and se…

It's like the old joke about Vegans. "How do you know if a physicist is an MWI proponent? Don't worry, they'll tell you soon enough..."

You should take D3 with vitamin K2 (talk with your doctor first if you're on blood-thinning medications) to avoid calcium being dumped into soft tissues (K2 ensures it preferential…

For the same field of view, a smaller sensor requires a decrease in the focal length; this leads to a greater depth of field. Moving to a medium-format camera will give less depth …

> Not sure the source but there is a rule in fiction that everything has a purpose, as opposed to reality. If the camera stops in an axe, you can be sure someone is going to wield …

This is from the University of Zurich (UZH), not the ETHZ. They're different institutions (UZH is a cantonal university, ETHZ is a federal one).

On my screen, it's taking about 4s to scroll one light minute (15 times light speed). So if the map extended all the way to Proxima Centauri, it would take over 3 months of continu…

Quark is from Finnegans Wake, not Ulysses.

A programmer walks into a bar, or not.

RAID 10 is more efficient (if that equates to performant) than RAID 6, but not more durable. In fact it's less. As an example, a 4-disk array (which has the same capacity in both R…

It was this one from the Reina Sofia University Hospital in Spain (high dose of Calcifediol significantly reduced need for ICU treatment): https://www.sciencedirect.com/science/art…