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If you’re looking for fun and educational ways to occupy your mini scientists, try these 5 DIY experiments. The post 5 DIY experiments mini scientists can do at home appeared first on In The Know.
This type of experiment was first performed by Thomas Young in 1801, as a demonstration of the wave behavior of visible light. [1] In 1927, Davisson and Germer and, independently, George Paget Thomson and his research student Alexander Reid [2] demonstrated that electrons show the same behavior, which was later extended to atoms and molecules.
The collected light then passes through a monochromator, where it is separated into different ranges of wavelengths to create a spectrum. The separated wavelengths of light are subsequently directed onto a detector, such as a charge-coupled device (CCD) array or a CMOS sensor , where the radiation intensities across the spectrum are recorded.
An example of spectroscopy: a prism analyses white light by dispersing it into its component colors. Spectroscopy is the field of study that measures and interprets electromagnetic spectra. [1] [2] In narrower contexts, spectroscopy is the precise study of color as generalized from visible light to all bands of the electromagnetic spectrum.
The spectrum appears only when these edges are close enough to overlap. In the early 19th century, the concept of the visible spectrum became more definite, as light outside the visible range was discovered and characterized by William Herschel and Johann Wilhelm Ritter (ultraviolet), Thomas Young, Thomas Johann Seebeck, and others. [17]
The wavelength of light is then selected by the slit on the upper right corner. An optical spectrometer (spectrophotometer, spectrograph or spectroscope) is an instrument used to measure properties of light over a specific portion of the electromagnetic spectrum, typically used in spectroscopic analysis to identify materials. [1]
Colour distribution of a Newton disk. The Newton disk, also known as the disappearing color disk, is a well-known physics experiment with a rotating disk with segments in different colors (usually Newton's primary colors: red, orange, yellow, green, blue, indigo, and violet, commonly known by the abbreviation ROYGBIV) appearing as white (or off-white or grey) when it's spun rapidly about its axis.
The aligned light then passes through the prism in which it is refracted twice (once when entering and once when leaving). Due to the nature of a dispersive element the angle with which light is refracted depends on its wavelength. This leads to a spectrum of thin lines of light, each being observable at a different angle.
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