These five really easy kids’ craft ideas don't require many ingredients ... Fill a tray with water and cut some simple boat shapes out of cardboard. Dab a bit of washing up liquid behind ...
These 10 – 30 second, unnarrated animations are chemically accurate representations of what's happening on the atomic level in some common chemistry outreach activities. Use them to help illustrate ...
A disk is supported by a shaft through its geometric center O. The mass center G is not coincident with O, leading to a mass imbalance as the disk rotates. How does the mass imbalance influence the ...