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Alarm Clocks
- Alarm clocks help keep people from oversleeping.
- The first alarm clock was the rooster on the farm.
- Alarm clocks today are usually plugged in, but some have a battery
backup.
- When it is time for the alarm, a loud sound plays until it is
switched off.
- Some alarm clocks today use a radio instead of a beep.
Aromatherapy
- Ancient Greeks, Egyptians, and Persians used plant oils
for medicine and perfume.
- The French chemist Rene Maurice Gattefosse first used
the term aromatherapy.
- The first aromatherapy book was published in 1977.
- Today aromatherapy is used all around the world.
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