Harrison WorldLAB Symposium

 
 
Topic: Cryogenics
 
Group Members:David, Matt, and Christine
 
Question guiding the project:What is the closest we can come to absolute zero?
 
Overview of the three required learning activities:
1)lab with freezing liquids in an ordinary freezer
2)Go to a cryogenics laboratory
3)Make an internet website with 25 other sites
 
Findings (list):
1.) Scientists have come within at least one degree of absolute zero.
2.)Absolute zero must be reached to save useable organs over long periods of time.
3.)We have learnd that solid and liquid objects fozen in a freezer differ in affects than those that were not frozen.
4.)We took a plain rubber ball and dropped it from a height
of 10ft and the recoil bounce of the ball was 5 1/2 ft. When ran a second bounce it's recoil was recorded at 5ft.
but when frozen for 10 hours the ball the only had a recoil
of 3 1/2 ft from a ten ft drop.
5.)The freezers at Cryolife can reach temperatures down to -300 degrees farenheight.
6.)We froze a spring that was 3in long and when bounced it had a recoil of 6in, and when frozen over ten hours, the freezing had no effect at all.
7.)Next we compaired the rate of time that it took for both water and motor oil to freeze.After 3hrs in the freezer the water was completly frozen when the oil was only partly frozen.
Conclusion: Was hypothesis proven correct, or incorrect - OR how was question answered:Our hypothesis was proven incorrect, but if we had a super freezer/vacuum we could come within 20 degrees.
 
Questions raised for further study:
1. Has anyone ever tried to preserve humans?
2. How does cryogenics play a role in the NASA space program?