I got the glass work at yesterday, I put a spoon into the glasses.
– glasses that touching around the spoon cracked in the glass (not surface)
– naked parts of spoon are became to dark, black.
– The small safety pins also became to dark, black
*Probably these things were not ‘became to dark’…I think these things’ surface were peeled off, or melted.
– the air remaining in the glasses.
<compare the before and after>
It was great experiment to know characteristic of the metal, and to know before melt and after.