Argon is 1.4 times heavier than air.
The Roman scourge was a whip-like instrument used for punishment and torture in ancient times.
Egypt, in ancient times.
argon is used in lamps
Argon is an element by itself.
argon
The time-measuring devices used in ancient times include chronometers and hourglasses. These were commonly used by explorers in their voyages.
in ancient times
In the ancient Egyptian times
In Ancient Times
In ancient times buttons were used for decorative purposes on clothing and as garment fasteners.
argon is used in museums to preserve documents and files and materials