"Zero Gravity" vs Zero-G - explained by Michael at Vsauce

Another topic that has received a lot of attention on this forum going back more than a decade is the point regarding how "zero gravity" is an improper term that does not conform to accurate physics. Well back in May of 2013, Michael at Vsauce made this excellent video (now with more than 5 million views):

What if You Were Born in Space?
http://www.youtube.com/watch?v=jTL_sJycQAA&t=2m29s

Quote:
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It's a common misconception that astronauts float around weightless in space because there is no gravity there. But there's plenty of gravity. In fact, there's pretty much the same amount of gravity operating on them that there is operating on you right now while you watch this video.

....to say that astronauts float around in orbit because they are experiencing "zero gravity" is very misleading. Really what they are feeling is zero-g, where 'g' is acceleration felt as weight.
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In the comments he links to an old post from our sci.space forums.

My last post today about the Cosmos thread was speaking to how much progress we've made in our understanding of basic history. Here we see how much progress we've made in our understanding of basic physics.

....and these small steps have only taken a little more than one decade!

I'll close with one final quote here...

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All truth passes through three stages:
- First, it is ridiculed.
- Second, it is violently opposed.
- Third, it is accepted as being self-evident.
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Arthur Schopenhauer, German philosopher (1788 - 1860)

The archives of this forum stand as an arduous record of those first two stages.


~ CT