why aren't Sand clocks (hourglasses)used anymore? Explain in brief.
Answers
Answer:
as sand clocks doesn't show correct and measured time as digital clock does
Answer:
Sand is the most complex of the components of hourglasses.
Not all types of sand can be used because the grains may be too angular and may not flow properly through the neck of the hourglass.
White quartz sand, the sand found on sparkling white beaches, is attractive but not the best for hourglass-making because it is too angular and does not flow smoothly.
Marble dust, other rock dust and rock flour—powder from glass cutting—and round sand grains, like those of river sand, are best for sand clocks.
During the Middle Ages, books for homemakers included recipes not only for cooking but for making glue, ink, soap, and also sand for hourglasses.
Now-a-days, we are shifted to New Generation. New thing replace the Old things.