Blow Hot, Blow Cold

Do you ever clean your spectacles by blowing air on them? They become hazy when you do so before you wipe them clean. Why do you think this happens? Why does the air you blow from your mouth be both hot and cold at times? How does this happen? Let us conduct an experiment and find out more.

Share with friends

Customize your course in 30 seconds

Which class are you in?
No thanks.