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Messages - paulEL

Pages: [1]
1
Physics, Astronomy & Cosmology / determining length of day on Jupiter
« on: 01/03/2019 09:09:52 »
(hope this is the correct place for this question)

How is the length of a day on Jupiter determined?

The outer bands on Jupiter run in opposite directions and i'm sure at different speeds.

2
Physics, Astronomy & Cosmology / Re: How do atoms 'know' what other atoms to bond with?
« on: 25/02/2019 12:17:14 »
evan_au,
thank you for your information.

As a kind of follow-up, secondary question/example....
if I cut a block of material, let's say plastic (something that does not normally re-attract back to itself like puddy) in half, why does it not try to re-combine when I touch the two parts together?
What happened to the atoms that cause them not to want to fuse back together?

3
Physics, Astronomy & Cosmology / How do atoms 'know' what other atoms to bond with?
« on: 25/02/2019 09:43:29 »
Hope i can explain my question sufficiently...
If two "things" are made of same material, why won't the atoms in the first object try to bond with the atoms in the other object? If i press two aluminum cans together why don't they try and combine or fuse together? they are made of the same material.
If my understanding is correct, basically at the sub-atomic level atoms either repel or attract other atoms. We cannot walk thru solid walls simply because the atoms in our bodies repel the atoms in the wall. How do the atoms "know" that they are not part of that wall?
this question may sound weird or stupid, but i'm not sure how else to word it.

Pages: [1]
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