Welcome to PhysLink.com - Your physics and astronomy online portal. Stay a while! Check out our extensive library of educational and reference materials. Also, check out our fun section!
|
Question What is the hardest rock and what is its compressive strength (PSI)? Asked by: Ed Mendoza Answer Diamond, since it is a natural mineral, would be considered a 'rock.' Diamond has a bulk modulus (reciprocal of compressibility) of 443 GigaPascals (GPa). One GigaPascal is equal to 14503.77 PSI. Therefore, the incompressibility of diamond is about 6.425 million PSI or 437,200 Atmospheres. Diamond was once thought to be the hardest and the most incompressible material on earth, either natural or man-made. Although diamond is still considered the hardest, the bulk modulus of the metal osmium has recently been found to be 476 GPa. That is over 7% more incompressible than diamond, but it is never found pure enough in nature to challenge the diamond. Answered by: Scott Wilber, President, ComScire - Quantum World Corporation |
Erector 10 Model Set
Regular Price: $39.99
Today's Price: $21.00
Great Erector starter set that allows you to build 10 cool models. Buy it now! Deal ends at midnight!
Here are our physics & astronomy bestsellers:
Solar Science Kit
Mini Plasma Ball
Deluxe 3D Mirascope
Revolving Multi-Color Fiberoptic Light
Deluxe Water Rocket Set
Magnetic Levitator - Classic
Solar System Planetarium 4M Kit
Ultimate Chemistry Set CHEM C3000 v2.0
Worlds Strongest Magnets
Blue Fiber Optic Light