What is the umbra and penumbra? Why doesn’t a flying airplane have an umbra and a penumbra?
SupportExpert
What is the umbra and penumbra? Why doesn’t a flying airplane have an umbra and a penumbra?
Share
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
What is the umbra and penumbra? Why doesn’t a flying airplane have an umbra and a penumbra?