asbestos-coated

Updated: May 16, 2025

The asbestos-coated door clanged open. Tom drew out a shallow tray, the contents of which were buried in a black powder. "Charcoal!" he explained, setting the pan on a table. "It prevents any rapid temperature change. Even common glass must be cooled slowly or it becomes as brittle as peanut candy." With the aid of a wooden rod Tom pulled out a glass bar about ten inches long and an inch thick.

Victor [pseud.] Appleton - Tom Swift and His Giant Telescope