Posted by: John | June 27, 2011

Thermals

Thermals are columns of rising air caused by the sun heating the earth unevenly. They are one important way a glider stays aloft. Near our gliderport, there’s a little brick country church with its attendant cemetery. One time, I was flying with a student when we found some lift over the church. As we circled in the thermal, I looked down the wing at the peaceful church grounds and wondered if that’s not where all our thermals end anyway – in a cemetery. I remembered watching the news and hearing scientists say that in seventy million (or so) years, our sun will implode on itself. There won’t be any more thermals after that inevitable event.
Advertisements

What are your thoughts?

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 )

Google+ photo

You are commenting using your Google+ 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 )

w

Connecting to %s

Categories

%d bloggers like this: