nikhil.io

twenty-seven things tagged “science

“We All Want Clean H2O” is a Podcast about Water Quality, Policy, Agriculture, and Climate Change

It’s hosted by three University of Iowa engineers and scientists who are tired of “cropaganda” and is rather entertaining. The latest episode calls the recent E15 Law a “Fart in a Hurricane”. One of the hosts is an engineer named Chris Jones who also writes a very lively blog with wonderful nuggets…

Hubble Ultra-Deep Field

One of my favorite things in the world. Located southwest of Orion in the southern-hemisphere constellation Fornax, the rectangular image is 2.4 arcminutes to an edge, or 3.4 arcminutes diagonally. This is approximately one tenth of the angular diameter of a full moon viewed from Earth (which is le…

Why Hulls are Painted Red

https://www.youtube.com/watch?v=-AdW030xQB4 TL;DW: This is “anti-fouling” that repels barnacles, algae, and mollusks by emitting “biocides”. This is desirable because they cause drag (think fuel) and structural damage. Red because traditionally some oxide of Copper. Also this: In nature bright colo…

The Titanic and Climate Change

Stumbled upon this nearly three-hour, real-time, annotated simulation of the Titanic sinking. Late night1. Which led me to James Cameron’s 2012 documentary Titanic: The Final Word, in which he assembles a group of engineers and historians to fix the simulation in the 1997 movie, which leads to this…

Concave Mirror, Ball, Black Hole

This video of a ball swinging in front of concave mirror (starts at 2:00, cannot embed for some reason) reminded me of simulations of what it would be like if one fell into a Black Hole. Here’s a Schwarzschild Black Hole, one “with mass, but with no electric charge, and no spin.” (Source) https://vi…

Cute Aggression

NPR on why many of us can identify with little Agnes: https://www.youtube.com/watch?v=1SI6rhotAkE The study found that for the entire group of participants, cuter creatures were associated with greater activity in brain areas involved in emotion. But the more cute aggression a person felt, the more…

Muons

Minute Physics on how Muons reaching terrestrial detectors from the upper atmosphere are direct proof of time dilation/length contraction in Special Relativity. https://www.youtube.com/watch?v=rVzDP8SMhPo What a Boss 🙏 💯…

Relativity

The 1.25s interval between each ‘tick’ in the background score of the water planet scenes1 in “Interstellar” indicates the passage of a single day on Earth. #theydidthemath See also: thalassophobia↩︎…

Freeman Dyson on Richard Feynman

When we arrived we were introduced to Henry Bethe, who is now five years old, but he was not at all impressed. The only thing he would say was “I want Dick. You told me Dick was coming,” and finally he had to be sent off to bed, since Dick (alias Feynman) did not materialise. About half an hour lat…