Greatest Science Inventions?
A few important inventions were in use so long ago that they predate written records. We don’t know how they were invented or who invented them, or even if they had a true, single inventor.
However, the following nine inventions are so basic to human and scientific beginnings that they must be mentioned. Take these away, and our civilized world falls apart. They form the first cornerstones of human progress.
A balance scale is a way to compare two weights. A teeter-totter is an example of a balance scale. Metal scales dating to 5000 B.C. have been found in archeological digs. Balance scales were in use by 4000 B.C. in both Egypt and China. Egyptians were able to accurately measure to a small fraction of an ounce by 1500 B.C.
The ability to compare two weights led to units of weight (tons, ounces, grams, pounds, etc.) and to number scales. Commerce evolved because balance scales gave merchants the ability to measure weights of product and payment and to measure their gains and losses.
The first humanoids used bows and arrows for hunting sometime before 30,000 B.C. Those early bows were little more than a vine stretched across a bent sapling branch. The first arrows were most likely sharpened sticks
We do not know how, when, or why, some clever human decided that short spears (arrows) would go farther, harder, and faster and be more deadly if he used the spring and power of a thin branch and a vine to propel them. But someone did, and the bow and arrow was born.
Over time, humans improved the flexibility, strength, spring, and resiliency of their bows. Surely bow makers conducted thousands of experiments, testing and comparing different types of wood and of building and layering a bow. Creating better hunting weapons helped early man learn how to conduct experiments, tests, and scientific investigations.