Léon Foucault: Difference between revisions

From Physics Book
Jump to navigation Jump to search
No edit summary
No edit summary
Line 7: Line 7:
Born Jean Bernard Léon Foucault, Foucault was born on September 18, 1819 to a Parisian publisher. Due to his family's education and access to resources, Foucault was home schooled for the majority of his childhood, before leaving home to study medicine. He quickly discovered that due to his blood phobia, medicine was not the field for him. In order to continue academic pursuits Léon began studies in physics. Initially focusing on optics, Foucault worked on photographic processes, before becoming an assistant to [[Alfred Donné]], working with microscopic observation.
Born Jean Bernard Léon Foucault, Foucault was born on September 18, 1819 to a Parisian publisher. Due to his family's education and access to resources, Foucault was home schooled for the majority of his childhood, before leaving home to study medicine. He quickly discovered that due to his blood phobia, medicine was not the field for him. In order to continue academic pursuits Léon began studies in physics. Initially focusing on optics, Foucault worked on photographic processes, before becoming an assistant to [[Alfred Donné]], working with microscopic observation.


After finishing his term with  Alfred Donné, Léon partnered with [[Hippolyte Fizeau]] in order to study properties of visible light generated by the sun. In 1850 the two would conduct experiments detecting the speed of light through different mediums, effectively disproving Newton's theory of light.
After finishing his term with  Alfred Donné, Léon partnered with [[Hippolyte Fizeau]] in order to study properties of visible light generated by the sun. In 1850 the two would conduct experiments detecting the speed of light through different mediums, effectively disproving Newton's theory of light, as well as determining the speed of light within 1% of the modern accepted value.  
==Notable works==
==Notable works==


Line 24: Line 24:
**<math>\theta_2</math>=angle of refraction.
**<math>\theta_2</math>=angle of refraction.


 
==Awards and Recognitions==


== See also ==
== See also ==

Revision as of 15:44, 4 December 2015

Claimed by PierreR


Biography

Foucault

Born Jean Bernard Léon Foucault, Foucault was born on September 18, 1819 to a Parisian publisher. Due to his family's education and access to resources, Foucault was home schooled for the majority of his childhood, before leaving home to study medicine. He quickly discovered that due to his blood phobia, medicine was not the field for him. In order to continue academic pursuits Léon began studies in physics. Initially focusing on optics, Foucault worked on photographic processes, before becoming an assistant to Alfred Donné, working with microscopic observation.

After finishing his term with Alfred Donné, Léon partnered with Hippolyte Fizeau in order to study properties of visible light generated by the sun. In 1850 the two would conduct experiments detecting the speed of light through different mediums, effectively disproving Newton's theory of light, as well as determining the speed of light within 1% of the modern accepted value.

Notable works

Foucault's Pendulum

Measurement of the speed of light

  • The Index of Refraction: the ratio of the speed of light through a vacuum to the speed of light in the medium. Written as: [math]\displaystyle{ n=\frac{c}{v} }[/math], where
    • c=speed of light in a vacuum
    • v=speed of light in medium

Note that the index of refraction can never be less than one, since [math]\displaystyle{ \frac{c}{c}=1 }[/math].

  • Snell's Law: size of the angle of refraction, or how much the light bends. Written as:[math]\displaystyle{ n_1\sin\theta_1=n_2\sin\theta_2 }[/math], where
    • [math]\displaystyle{ n_1 }[/math]=index of refraction of medium 1
    • [math]\displaystyle{ n_2 }[/math]=index of refraction of medium 2
    • [math]\displaystyle{ \theta_1 }[/math]=angle of incidence
    • [math]\displaystyle{ \theta_2 }[/math]=angle of refraction.

Awards and Recognitions

See also

External links

http://www-rohan.sdsu.edu/~aty/explain/optics/refr.html

http://ocw.mit.edu/courses/mechanical-engineering/2-71-optics-spring-2009/video-lectures/lecture-2-reflection-and-refraction-prisms-waveguides-and-dispersion/MIT2_71S09_lec02.pdf

References

https://en.wikipedia.org/wiki/Refracting_telescope

http://www-rohan.sdsu.edu/~aty/explain/optics/refr.html