LCP-17 Measuring the hydrogen Balmer series and Rydberg’s constant

Short Description:

The Balmer series is a set of discrete emission spectral lines of the Hydrogen atom.
The diffractive grating is used to disperse the collimated beam of hydrogen deuterium lamp, and the diffractive angle of Balmer series line is measured by digital protractor and telescope. The experimental value of Rydberg constant is derived from the wavelength.

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Specifications

Item	Specifications
Hydrogen-Deuterium Lamp	Wavelengths: 410, 434, 486, 656 nm
Digital Protractor	Resolution: 0.1°
Condensing Lens	f = 50 mm
Collimating Lens	f = 100 mm
Transmissive Grating	600 lines/mm
Telescope	Magnification: 8 x; diameter of objective lens: 21 mm with internal reference line
Optical Rail	Length: 74 cm; aluminum

Part List

Description	Qty
Optical rail	1
Carrier	3
X-translation carrier	1
Optical rotation stage with digital protractor	1
Telescope	1
Lens holder	2
Lens	2
Grating	1
Adjustable slit	1
Telescope holder (tilt adjustable)	1
Hydrogen-Deuterium lamp with power supply	1 set