Tag Archives: Science

Who invented the Clock ?

Benjamin Banneker 

Benjamin Banneker built one of the first watches made in America, a wooden pocket watch in 1753. Benjamin Banneker (1731 – 1806) was a free African  American almanac author, surveyor, naturalist and farmer. He had little formal education and was largely self-taught.

Benjamin Banneker - Wooden Watch Clock    Benjamin Banneker PictureBenjamin Banneker Signature

Who is Benjamin Banneker

Benjamin Banneker - Early Life

Benjamin Banneker Achievements

     Benjamin Banneker Almanac                            Benjamin Banneker Almanac 1792

Benjamin Banneker - Correspendance with Thomas Jefferson

Benjamin Banneker sent Almanac to Thomas Jefferson

Benjamin Banneker Letter to Thomas Jefferson

Benjamin Banneker Marker

Don't Forget to Fall Back

Who invented the First Battery ?

  Alessandro Volta

  • The first electric battery called the “voltaic pile” was invented by Alessandro Volta in 1799.
  • Alessandro Volta (1745 – 1827) was an Italian physicist, chemist and a pioneer of electrical science.
  • He discovered methane mixed with air could be exploded using an electric spark, “contact electricity” resulting from contact between different metals, and electric potential in a capacitor is directly proportional to electric charge.
  • In recognition of Alessandro Volta’s contributions to electrical science, the unit of electric potential is called the volt.

Who invented the First Battery

Alessandro Volta and Battery  Alessandro Volta

Alessandro Volta's Voltaic Pile


Who invented the First Hot Air Balloon ?

Montgolfier Brothers

    • The hot air balloon is the oldest successful human-carrying flight technology.
    • French brothers Joseph-Michel Montgolfier (1740 – 1810) and Jacques-Étienne Montgolfier (1745 – 1799) built the first hot air balloon out of cloth and paper.
    • They discovered that a fabric bag filled with hot air would rise.
    • Modern hot air balloon lifted off in 1783 with a demonstration in front of King Louis XVI, Marie Antoinette, and a crowd of 130000 in Annonay, France.

Hot air balloon over yellow flower fields against blue sky

Montgolfier Brothers

First Hot Air Ballon

Original Caption: Paris: Illustration of man's first free ascent from Earth on November 21, 1783. Pilatre de Rozier and Marquis D'Arlandes wave from gallery of their Montgolfier as they set out from Paris.    Montgolfier Model

Hot Air Balloon by Montgolfier Brothers

Hot Air Balloon Anatomy

Hot Air Ballon Timeline