You are going to have to set up your problem more rigorously and clear if we are to continue this conversation.
edit: typo
The light is staying between the mirrors, which means it’s moving diagonally, which means it will take longer.
Where in that are you getting lost?
You are going to have to set up your problem more rigorously and clear if we are to continue this conversation.
edit: typo
The light is staying between the mirrors, which means it’s moving diagonally, which means it will take longer.
Where in that are you getting lost?