Invents

Pencil

Jun 12, 1564

It was discovered in a quite pure deposit of graphite in borrowlade, Colombia, at that time it was considered lead

The microscope

May 23, 1590

Zacharias Janssen, a Dutch eyeglass builder, had invented the first microscope in 1590, although it was then considered more of a curiosity than an advance

The batery

Mar 7, 1800

the Italian physicist Luigi Galvani discovered that the dead leg of a frog contracted when touched with two pieces of metal

Fridge

Apr 30, 1834

Jacob Perkins was the first to describe how tubes filled with volatile chemicals whose molecules evaporate easily could keep food cold

The phone

Aug 9, 1876

The firm introduced the first cell phone service in Missouri (USA) in 1947, although the era of large coverage and affordable prices did not come until the late 80s.

Radio

Jun 23, 1895

in 1888, while demonstrating electromagnetic waves to a group of students, he said: "I do not see any practical use for this invisible form of electromagnetic energy." Fortunately, the Russian Alexander Popov and the Italian-Irish inventor Guglielmo Marconi, saw the technological potential of said form of energy and, separately, sent and received the first radio waves

Aspirin

Oct 31, 1899

The Greek treatment was based on willow bark tea, and was effective against fever and gout. Much later, chemist Felix Hoffman perfected the remedy by experimenting with his arthritic father, and marketed it under the name of Aspirin.

TV

Mar 5, 1925

Word is half Greek and half Latin. Nothing good can come from it. " Scottish John Logie was the first to publicly demonstrate television in 1925.