André Blondel

André -Eugène Blondel ( born August 28, 1863 in Chaumont (Haute- Marne), † November 15, 1938 in Paris) was a French physicist. He is considered the inventor of the oscilloscope and has a system of photometric units developed that is with minor modifications still in use today.

Life and work

André -Eugène Blondel graduated in 1888 from the Ecole des Ponts et Chaussées top of his class from. Following a stint as an engineer, he later became a professor of electrical engineering at his alma mater.

In 1893, he invented the electromagnetic oscillograph. In 1894 he suggested the lumen and other units of measure the photometry. These were adopted in 1896 by the IEC and are still in use today.

Blondel's contributions to science include the wireless telegraphy, the acoustics and the mechanics, he also developed proposals for a theory of the induction motor.

A ( obsolete ) unit of luminance named after him Blondel.

Honors

• Faraday Medal ( 1937)
• Medal of the Franklin Institute
• Montefiore Prize
• Lord Kelvin Price
• Member of the Académie des sciences (1916 )
• Corresponding member of the St. Petersburg Academy of Sciences ( 1932)