Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 15 - Think and Explain - Page 299-300: 87

Answer

If the metal leads penetrate the glass, they must have similar thermal expansion coefficients. If the heated metal expands faster than the heated glass, the lead may crack the glass. If the metal expands more slowly than the glass, the airtight seal around the lead may be compromised.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.