Why I Hide Downstairs and Sew

Conversation between three men of the family:

Son #2: So black holes are real?
Dad: Sure they’re real.
S2: So what are they?
Dad: They’re places where the gravity is so strong that the light doesn’t have enough energy to get out; so they’re black.
S2: Then what happens to the light?
Dad: It just disappears.
Son #1 interjecting from the hallway: That’s not right, the black hole gains mass from the light.
Dad: (surprised) That’s right, the photons add to the mass of the black hole.
Son #2: So as the black hole gets bigger, the gravity gets stronger.
Dad: Right (backing slowly towards the door).

Advertisements

4 responses »

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s