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Merry Grav-Mass!

Here is a video Grav-Mass greeting.

A Grav-Mass tree Newton Ornament.  Copyright
		2012 Nathan Davis Released under Creative Commons
		Attribution Sharealike 3.0.

On December 25, Isaac Newton's birthday, we celebrate the existence of comprehensible physical laws. Remember, Gravitation is a well-established scientific theory, but Intelligent Falling is just religion pretending to be science.

Here's a gallery of Grav-Mass cards that you can contribute to.

One way to celebrate Grav-Mass is to decorate a tree with apples and other fruits. Glue them or attach them, but not too well! The idea is that occasionally a fruit should fall. Put them on the tree no more than 2 feet up, so that they won't get damaged or hurt anybody when they fall. Investigating and perfecting the methods for doing this is a great way expose a child to the process of scientifically studying the behavior of the physical world.

Another way to celebrate Grav-Mass, in a group, is by telling each other about scientific knowledge and understanding, or discussing what kind of experiment could answer an unresolved question about the world.

We have one Grav-Mass carol, We Three Laws. If you know of any others, please tell me about them: rms at gnu dot org. Other songs about science are also suitable to play or sing on Grav-Mass;

The Symphony of Science.

The Ten Days of Newton.

Also, The Galaxy Song by Monty Python. (And some commentaries on it.)


I think the idea of Grav-Mass was conceived by science fiction writer James Hogan.


On Dec 19, 2012, I opened an envelope and saw what I believe was the first Grav-Mass card ever made. It was made and sent to me by Simon and Jane Whiteley. Here are the images that appear in the card, in case you would like to make some.

Here's info about their family Grav-Mass celebration in 2012.


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Please send comments on these web pages to rms@gnu.org.

Copyright (C) 2000-2012 Richard Stallman

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