Neil deGrasse Tyson Explains the Difference Between Mass, Weight, and Density

One on momentum, angular momentum, torque etc would also be nice.

At this point, Chuck is getting a free PhD just by being around Neil 😂

"YOU JUST GOT SCIENCED" Neil Degrasse Tyson, 21st century, 2020 (human calendar) , Milky way, Planet Earth.

Mass is an amount of stuff. Weight is the amount of force exerted by stuff under gravity. Density is the amount of stuff in a given amount of space. A bunch of feathers is a mass that weighs 5kg and takes up a huge amount of space because it isn't dense. A barbell is a mass that weighs 5kg and takes up a small amount of space because it's pretty dense. "Mass" is hard to quantify without gravity. If you have a six-sided die (d6) made out of papier maché and another one made out of iridium, one will be much heavier, because it's much denser, meaning it has more mass in the same volume as the other one. A box of tissues and a gold brick have about the same volume, but you can pick up the tissues with your bare hands. With no gravity, you can pick up both, but the gold bar will still have more mass, and it will still have the same density. You can file that under Things Flat Earthers Refuse To Understand.

I wish my Science teacher taught me like this, I wouldn't have taken Commerce and Accounts.

Imagine entering a coffee shop and seeing Neil Degrasse Tyson outsmarting the waiter who lied to him haha. Tremendous.

Just randomly about the ivory soap floating being a feature. It was likely a selling point when showers weren't a thing and you only had people taking baths. So if you let go of the soap you'd rather have it float and be easy to find than try and find a slippery thing at the bottom of some murky water.

Gotta say that these videos are more important to me during this time than you could ever know. Thank you for doing you!

I have been told that the soap floating was a selling point because at the time people still took baths in lakes and if you dropped your soap it was very difficult to find, whereas if it floats you can see it float and get it very easily Idk how true that is but I remember being taught that

This episode was very interesting. I knew these things, but was never able to explain it to others. Thanks for the lessons! I love you guys.

Here in Ireland (in the UK too, I think), what you call "heavy cream" in the US is called "double cream". We have "single cream", "whipping cream", and "double cream", which all have differing amounts of fat.

I think Chuck gets an additional bonus in any gravitational situation because his humor is so uplifting. :-)

It's 4:20 and time for another Xplainer VIdeo! Never miss an episode. Thank you Chuck for all your hard work at making me Feel More Intelligent than I normally do.

Wow my eyes are open now I have been using these words for years and not really known the meaning thanks Dr Tyson

These explainer videos are very useful. Dont stop making them. Thanks

Thanks for the mention fella's. We lumberjacks certainly appreciate the enormous physics/dynamics we unleash during production of our wood cylinders. Big fan! - Paul Bunyan Guy

With this episode you have me excited for some cool future explainers!!!

Love this explanation, might have a few words in it ;-) that I might hesitate sharing with my 4th graders, but..... love the explanation! Neil is the only one who can explain about astronomy to this elementary science teacher and have her understand!

That’s my favorite ndt story. That was an excellent explanation of the scientific process

Love Star talk chat,thank you for sharing Gentlemen.