Invented by whom part,the most common inventions

who has invented what ,let us discover

1. Invented by whom part 2 Memories with I rum khan

2. Eraser Joseph Priestly discovered the erasing capabilities of rubber, the accreditation for developing and marketing the concept was given to Edward Nairne , a British engineer. As an idea or concept, the eraser is marvelous. It comes in all sorts of shapes such as the delete button, white tape, black tape, and the more literal rubber-eraser.

3. Machine gun Invented by Richard Gatling Silver glass mirror Invented by Justus Von Liebig

4. DNA fingerprinting In 1984, molecular biologist Alec Jeffrey devised a method to analyze DNA sequences in humans which involves more or less three billion units . Type writer 1 st mechanical type writer by Italian named Pellegrino Turri . Christopher L. Sholes invented QWERT format

5. Jet engine Invented by sir Frank Whittle Steam engine By James Watt Refrigerator J. Harrison and A. Catalan

6.   HYPODERMIC NEEDLE T he earliest confirmed experiment using hypodermic needles didn’t happen until 1656 by Christopher Wren, when he injected opium into dogs TEELSCOPE Hans lipperhey