some very old glass objects appear slightly milky instead of being transparent

Asked by Akshansh prasad | 8th Jan, 2014, 04:03: PM

Expert Answer:

Glass is made up of silica. It is partially crystalline and partially amorphous. As time passes due to changes in temperature of the system, it becomes crystalline as some of the atoms become more arranged. It absorbs water and form a layer which results into cloudiness in the galss. Thus the glass turn slightly milky on aging instead of being transparent.

Answered by Prachi Sawant | 9th Jan, 2014, 09:47: AM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.