Neil Renicker neilrenicker

Transcript for MAGNETS: How Do They Work?

video by MinutePhysics on YouTube
transcribed by Neil Renicker

If you take a piece of wood and put it next to another piece of wood, nothing happens. And if you take a pice of granite and put it next to another rock, still nothing. But if you take this piece of iron, and put it next to this other piece of iron, magic! I mean, magnet.

Magnetic objects are able to magically attract at long distances because they generate magnetic fields that extend invisibly out beyond the object. But the mystery is this: where do magnetic fields come from?

If the camera on an external display is not showing up in the list of avaiable camera inputs for the Mac, run this command in the terminal:

sudo killall VDCAssistant

Convert an m4a file to an mp3 using ffmpeg

Install ffmpeg using homebrew:

brew install ffmpeg

convert the file:

Merging Pull Requests

If possible, interactively rebase your feature branch against master before merging, and condense your work-in-progress commits to clean, single-purpose commits.

Prereq: install git-up

git up
git checkout

	People often ask me for a reading list. Here are my most common recommendations.


	STARTERS:

	The Visual Display of Quantitative Information - Edward Tufte
	http://www.amazon.com/Visual-Display-Quantitative-Information/dp/0961392142/ref=sr_1_1?ie=UTF8&qid=1327537840&sr=8-1

	Hot Text: Web Writing that Works - Lisa and Jonathan Price
	(Excellent before/after examples)

	{
	"female" : [
	"Saanvi",
	"Anya",
	"Aadhya",
	"Aaradhya",
	"Ananya",
	"Pari",
	"Anika",
	"Navya",

	.babel-repl-reporter {
	background-color: #323330;
	border-color: rgba(255, 255, 255, 0.2);
	color: white;
	font-weight: bold;
	height: 20vh;
	}

	$ cd ~/my-project
	$ heroku create
	$ git add .
	$ git commit -m ‘initial commmit’
	$ git push heroku master