Do you know the face of the physical unit you are using in your calculations?

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TL;DR Summary

Do you know the face of the physical unit you are using in your calculations?
Test your knowledge here.

Here are faces of 20 classical scientists whose names are associated with physical units. Early 1600s to early 1900s.

At first glance through, how many do you know for certain? Some physicsforum members will most likely know them all! (I only got 4.)

Now, if you did not know them all at first, but still want to try to get an "A" on this quiz, here's a random list in the first spoiler.
Match faces with names. Clues: racial facial features, clothing, hair styles. And NO google/online cheating! Take your time; hurry up.

Spoiler: names list

Clausius ..............Weber................ Watt.................. Kelvin.............. Volta

Ohm ...................Coulomb............ Gauss............... Hertz............... Celsius

Bell .....................Pascal ..................Tesla....................Newton...........Oersted

Torricelli........... Faraday.............. Joule.....................Ampere...........Henry

Last, here's the answer sheet. How'd you do? Now you know them.

Spoiler: answer sheet

1._Karl Friedrich Gauss .......2_Charles Augustin de Coulomb

(1777-1855)............................(1736-1806)

3._Georg Simon Ohm........ 4._Alessandro Volta

(1787-1854)........................... (1745-1827)

5._Isaac Newton....... 6._Hans Christian Oersted

(1642-1727)............... (1777-1851)

7._William Thomson, Baron Kelvin ...........8._Blaise Pascal

(1824-1907) .........................................................(1623-1662)

9._Alexander Graham Bell ........10._Evangelista Torricelli

(1847-1922) ....................................(1608-1647)

11._Joseph Henry .........12._Michael Faraday

(1797-1878) .....................(1791-1867)

13._James Prescott Joule .............14._Andre Marie Ampere

(1818-1889)....................................... (1775-1836)

15._Rudolf Julius Emanuel Clausius........... 16._Wilhelm Eduard Weber

(1822-1888) .......................................................(1804-1891)

17._Anders Celsius..... 18._Nikola Tesla

(1701-1744)..................... (1856-1943)

19._James Watt............. 20._Heinrich Rudolf Hertz

(1736-1819) ....................(1857-1894)

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