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people have been using it forever
200 years
Professor Gregg Suaning has been working for some years at University of New South Wales with a team developing a bionic eye.
A lever and a pulley are different. They are both simple machines that have been around for over two thousand years and described in detail by a Greek named Archimedes.
The term fuel applies to anything that we burn for energy. The fuel that we have been using the longest is wood, which hunter-gatherer. Humans and human ancestors have been using wood as fuel for anywhere between 200,000 and 1.2 milliion years.
people have been using it forever
200 years
I BOUGHT MY REGAL6760 BREAD MACHINE AT THE RESALE ( GOODWILL OR ONE LIKE THAT) FOR $5.00 i SE THESE BREAD MACHINES ALL THE TIME IN THESE STORES . i HAVE BEEN USING USED BREAD MACHINES FOR YEARS IF ONE WEARS OUT I CAST IT.
yeah someone fel in to a big tub of choclate mix and
Perpetual motion machines have, to date, always been a disappointment.
In recent years, cold infusion machines have been developed, which are attached to the blood vessels supplying the kidney, and then push a steady flow of cool solution around them. These preserve organs better than the traditional method of using ice to preserve organs.
Machines have been around for thousands of years. The ancient Greeks had a machine that produced water in a temple. In ancient China they had machines in the bow of ships that acted like flame throwers. Man has always created some form of machines.
Actually the United States has been using stealth technologies for several years, not a few years.
about 50 years
I need the answer for this question to !years and years and years b
because they have been buried millions of years ago then humans come along and built houses, factorys, ect ect are they are covering them.
no its not i have been using it for 3 years