Lol , Without Clock , how do u come to know the time .
i Think now u understand why they are useful .
The person who created the first punch clock is Benjamin Banneker. Benjamin Banneker was an African American scientist who changed the world with his invention.
o' clock
the full form of it is of the clock
it meas the clock hand it meas the clock hand it meas the clock hand
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Invention of the pendulum clock
I think a yo-yo is a useful invention because kids can swing it and have fun!
There is a few inventions that are not very useful. The most known invention that is not useful is the toilet paper roller.
There are many useful inventions of science. The answers vary. Some believe the number one invention that is the most useful in science is the electric furnace. It was made in 1889. The electric furnace converted aluminum to metal that was very useful. Another invention that people considered the most useful invention of science are antibiotics. Antibiotics help cure many illnesses.
metronome
E=mc2 which are useful now in the battlegrounds
A good invention is something that is very useful and needed by the consumer. Advancements in older inventions are always useful as well.
The light bulb is useful because it lights up places!
Alexander Bain was a Scottish inventor. He invented the first electric clock which was patented on January 11, 1841.
first mechanical clock with an hour hand
to make something useful
The Chinese invention that was most affected would be the mechanical clock.