Atheists who love Science!

Information

Atheists who love Science!

A group for science enthusiasts of all types -- professionals, amateurs, students, anybody who loves science.

Members: 1570
Latest Activity: Nov 27

Whether you're a professional, a student, an amateur, an enthusiast, whatever! Lots of atheists love science. Might as well have a group for it!

Feel free to nerd out, link articles, talk about your favorite field of research, whatever!

The icon is from www.wearscience.com.


9/28/2008
I've been super busy with school this semester -- no time for Atheist Nexus, sadly!!
If anyone who's around here a lot wants me to toss them moderation privileges to run this group or anything, just send me (Sara) a message! Thanks!

11/14/2009
Removed ability to send mass messages to everyone in the group. At 1000+ members, that seems like asking for spam.

Offer still open if anyone active in the group wants moderation privileges, but it appears everything has been going smoothly with all kinds of great discussions without moderation. Fantastic! :)

Discussion Forum

Corrupt Science

Started by Ruth Anthony-Gardner. Last reply by Grinning Cat Nov 23. 6 Replies

Super-Silk

Started by Ruth Anthony-Gardner. Last reply by Idaho Spud Oct 10. 1 Reply

Planetary Context of the Anthropocene

Started by Ruth Anthony-Gardner. Last reply by Chris Oct 2. 1 Reply

3-D Printed Bone Repair

Started by Ruth Anthony-Gardner Sep 28. 0 Replies

Cold Vaccine Progress

Started by Ruth Anthony-Gardner Sep 28. 0 Replies

Publish-Or-Perish Guarantees Flawed Research

Started by Ruth Anthony-Gardner. Last reply by Grinning Cat Sep 22. 1 Reply

Acoustic Prism

Started by Ruth Anthony-Gardner. Last reply by Grinning Cat Aug 13. 1 Reply

Hyperkeystone Species

Started by Ruth Anthony-Gardner. Last reply by Grinning Cat Jun 21. 1 Reply

Diagnostic test for ALL viruses

Started by Ruth Anthony-Gardner. Last reply by Alexandra Rodriguez Jun 20. 6 Replies

Primate Evolution

Started by Qiana-Maieev. Last reply by Qiana-Maieev Jun 19. 3 Replies

Stem Cells Treat Stroke

Started by Ruth Anthony-Gardner. Last reply by Qiana-Maieev Jun 2. 1 Reply

Our Limbs May Have Evolved From Sharks Gills?

Started by Qiana-Maieev. Last reply by Sean Murphy Apr 22. 1 Reply

CRISPR soon to cure diseases

Started by Ruth Anthony-Gardner. Last reply by Qiana-Maieev Apr 21. 1 Reply

Magnetic Field Powered By Moon

Started by Ruth Anthony-Gardner Mar 31. 0 Replies

Comment Wall

Comment

You need to be a member of Atheists who love Science! to add comments!

Comment by Joan Denoo on December 12, 2011 at 7:05pm

Driving up the Alcan highway I encountered many, huge frost-heaves; was it not the water that caused them? 

Comment by Joan Denoo on December 12, 2011 at 4:52pm

Parts of Spokane are built on basalt and water flows through it like a sieve.  Our homes and buildings dance all over the place during change from summer to winter and back again. Part of my driveway lifts 3 inches every winter.  Is it water changing to ice? or something else that makes it have greater volume?   

Comment by Boothby171 on December 12, 2011 at 10:49am

What I want to know is: if you take a half-full glass of water and put it in the freezer, is it still half full, or is it now half empty?

Comment by Boothby171 on December 12, 2011 at 9:32am

Thanks, Clarence; I was about to step in, myself......

Comment by Lary9 on December 12, 2011 at 6:30am

Cool link. Thanx, Ruth.

Comment by Clarence Dember on December 12, 2011 at 5:18am
mass/atom vs mass/ unit of volume .
Comment by AtheistTech on December 12, 2011 at 3:49am

Yes sir, Chris G, we are in agreement. I took a look at your profile and did not see math as one of your fortes. If you understood algebraic math better, I could give a better explanation why a 1/2 glass water has the same mass as the ice created from that 1/2 glass water, but surely has a different density. I am not an educator either, but I feel I have a good handle on Mass, Weight, and Density. Merry Hanukkah! Oops! Is it Happy Christmas? Or maybe Pleasant Kwanzaa? Oh shit on it! Happy Holidays! (including Happy New Year!)

Comment by Chris on December 12, 2011 at 3:35am

We probably are in agreement.

Check this out.

Comment by AtheistTech on December 12, 2011 at 2:53am

@Chris G    I think we are in agreement.

Density=Mass/Area

If the Density changes, then either the Mass or the Area or both change.

In the example of the freezing of half a glass of water, the water does not lose or gain any mass. The Mass stays the same, but the Density and Area change.

1kg/centimeter cubed (Density)=1Kg (Mass)/1 centimeter cubed (area)

In this 1/2 cup water example: If the Density changes to .5kg/centimeter cubed, the Mass will stay at 1kg, but the Area will change to something like 2 centimeters cubed.

.5 kg/centimeter cubed = 1kg/2 centimeters cubed or .5=1/2 The Mass doesn't change, but the Density does.

Comment by Chris on December 12, 2011 at 2:40am

Check out this web site about rubber expansion.

Air in a tire expands because of friction therefore the tire expands that doesn't mean that the rubber expands. The above web site says that rubber contracts with heat as written below:

Whether a material expands or contracts when it is heated can be ascribed to a property of the material called its entropy. The entropy of a material is a measure of the orderliness of the molecules that make up the material. When the molecules are arranged in an ordered fashion, the entropy of the material is low. When the molecules are in a disordered arrangement, the entropy is high. (An ordered arrangement can be thought of as coins in a wrapper, while a disordered one as coins in a tray.) When a material is heated, its entropy increases because the orderliness of its molecules decreases. This occurs because as a material is heated, its molecules move about more energetically. In materials made up of small, compact molecules, e.g., the liquid in a thermometer, as the molecules move about more, they push their neighboring molecules away. Rubber, on the other hand, contains very large, threadlike molecules. When rubber is heated, the sections of the molecules move about more vigorously. In order for one part of the molecule to move more vigorously as it is heated, it must pull its neighboring parts closer. To visualize this, think of a molecule of the stretched rubber band as a piece of string laid out straight on a table. Heating the stretched rubber band causes segments of the molecules to move more vigorously, which can be represented by wiggling the middle of the string back and forth. As the middle of the string moves, the ends of the string get closer together. In a similar fashion, the molecules of rubber become shorter as the rubber is heated, causing the stretched rubber band to contract

Read more: http://wiki.answers.com/Q/Why_does_heated_rubber_expand#ixzz1gJ54OlRp

If you fill a cup half full of water and put it in the freezer you will see it expands. Ice takes up more volume making is less dense. It has less mass or density per volume. 

Sorry I'm not able to explain this in writing very well. I'm not a teacher.

 

Members (1570)

 
 
 

line

Update Your Membership :

Membership

line

line

Nexus on Social Media:

line

© 2016   Atheist Nexus. All rights reserved. Admin: Richard Haynes.   Powered by

Badges  |  Report an Issue  |  Terms of Service