Jump to content
Sign in to follow this  
  • entries
    29
  • comments
    27
  • views
    2,212

Breaking the Ice

Sign in to follow this  
BrandyBoy72

257 views

I was going for a nice walk today, it was a bit cold, but it didn't bother me too much.

And I didn't too much mind the somewhat cloudy sky, the sprinkled snow on the ground was a nice touch as well.
At one point I came to a spot on the sidewalk where the ground beneath my feet was no longer cement, it was ice.

BUT THIS, this was no fine smooth sheet of ice, this was a cracked earth beneath my feet.

The first crackle that reached me made me believe that I had just found my way onto some broken glass bottle,

but a quick somewhat concerned glance below proved the sound to be otherwise.

The ice, cracked from both myself and no doubt a handful of other average Joes who also daringly walk the streets of Rochester on such a day, got me to think.

After my midday midwinter escapade, and after a few minutes of warming up, I warmed up to the subject of Thermal Shock (this is where the somewhat sciency stuff begins).

This has to do with the cracking of ice, whether from heat or from some guy walking on it.

So, ice breaks, but so does other stuff, ice just might do it a bit more extravagantly, kinda like glass would, because sub atomically it has a crystalline structure to it. 

I'd go more into that, but that's more chemistry.

In physics we like stress (preferably on objects we are testing).

So, the ice is under stress, like when I walked on it, so it cracked; this happened a lot of times and very quickly. 

Of course, stress eventually causes failure, but what about this "Thermal Shock"

Well, your time is precious so I'll do my best to sum it up for you the best I can.

"Thermal shock occurs when a thermal gradient causes different parts of an object to expand by different amounts. This differential expansion can be understood in terms of stress or of strain, equivalently. At some point, this stress can exceed the strength of the material, causing a crack to form. If nothing stops this crack from propagating through the material, it will cause the object's structure to fail."

 

 

Sign in to follow this  


0 Comments


Recommended Comments

There are no comments to display.

Guest
Add a comment...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Terms of Use

The pages of APlusPhysics.com, Physics in Action podcasts, and other online media at this site are made available as a service to physics students, instructors, and others. Their use is encouraged and is free of charge. Teachers who wish to use materials either in a classroom demonstration format or as part of an interactive activity/lesson are granted permission (and encouraged) to do so. Linking to information on this site is allowed and encouraged, but content from APlusPhysics may not be made available elsewhere on the Internet without the author's written permission.

Copyright Notice

APlusPhysics.com, Silly Beagle Productions and Physics In Action materials are copyright protected and the author restricts their use to online usage through a live internet connection. Any downloading of files to other storage devices (hard drives, web servers, school servers, CDs, etc.) with the exception of Physics In Action podcast episodes is prohibited. The use of images, text and animations in other projects (including non-profit endeavors) is also prohibited. Requests for permission to use such material on other projects may be submitted in writing to info@aplusphysics.com. Licensing of the content of APlusPhysics.com for other uses may be considered in the future.

×
×
  • Create New...