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Becquerel phosphoroscope

1865-1875

Newton's rings demonstration apparatus by J. Duboscq

1875-1885

Heliostat by Jules Duboscq, 1850-1880

1850-1880

Stereoscope by Jules Duboscq

early Brewster type stereoscope

1850-1855
Duboscq colorimeter by Bausch and Lomb, c1950 in box with separate light source and transformer

Duboscq colorimeter by Bausch and Lomb

Radiophone made by Jules Duboscq, c. 1885

Radiophone made by Jules Duboscq, c. 1885

1885
Vertical spectroscope with two bunsen burners, specimen stand and case, by J. Duboscq, Paris, c.1870.

Vertical spectroscope with two bunsen burners

1865-1875
four-prism spectroscope (only two prisms present), by J. Duboscq of Paris, France, c. 1870. It was used by the third Marquis of Salisbury, British Prime Minister four times between 1885 and 1902, an enthusiastic amateur scientist.

Four-prism spectroscope

1865-1875
Stereoscopic portrait daguerreotype of Jean Bernard Léon Foucault (1819 - 1868). Foucault was a physicist known for his demonstration of the Foucault pendulum, a device demonstrating the effect of the Earth's rotation. He also made an early measurement of the speed of light and discovered eddy currents. Foucault also took the first daguerreotype of the sun in 1845. He worked with Duboscq, who took this stereo daguerreotype, and with Fizeau.

Stereoscopic portrait daguerreotype of Léon Foucault

Duboscq multipurpose polarimeter signed "Duboscq a Paris," French, 1849-1860

Duboscq multipurpose polarimeter signed "Duboscq a Paris

1849-1860
Stereoscopic portrait daguerreotype of Alexandre-Edmond Becquerel (1820 - 1891). Becquerel was a French physicist who studied the solar spectrum, magnetism, electricity and optics.

Stereoscopic portrait daguerreotype of Edmond Becquerel

Stereoscopic portrait daguerreotype of Jean-Baptiste Biot (1774-1862). Biot was a physicist, astronomer, and mathematician. He established the reality of meteorites, made an early balloon flight, and studied the polarization of light.

Stereoscopic portrait daguerreotype of Jean-Baptiste Biot (1774-1862).

Optical Lantern, with accessories and one fitted case (case locked and key missing) by Jules Duboscq, Paris, France, c.1850.

Optical Lantern

1845-1855
Jamin circle for repeating the optical experiments of Jamin and Senarmont by Duboscq and Pellin, Paris, 1886. Comprised of stand and circle with separate display case containing accessory pieces of apparatus. Made by Jules Duboscq. (See stroke records)

Jamin circle for repeating the optical experiments of Jamin and Senarmont

1886