refraction

0 votes
asked Mar 24, 2013 by PhraonMtm

The level of water in a clear, colorless glass is easily observed with the naked eye. The level of liquid helium in a clear glass vessel is extremely difficult to see with the naked eye. Explain

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.
Welcome to Questions and Answers, where you can ask questions and receive answers from other members of the community.
...