Light and Optics – Phywe


Welcome to our latest EduTechnics news, featuring PHYWE’s physics & optics experiments. You and your students can measure the impressive speed of light – a critical phenomenon that has shaped our understanding of physics and space-time. The idea that light travelling at nearly 300,000 kilometres per second can be measured is incredible. This experiment is not only an exciting learning adventure but also a window into the fundamental principles of optics and physics as a whole.

We have also compiled a selection of thematically appropriate experiments in the field of optics. Each of these experiments reveals insights into the facets of light and its interaction with the world around us.

Measuring the Speed of Light – In the Fast Lane of Physics

Measuring the velocity of light

Measuring the velocity of light –
Item No. P2210101

The intensity of the light is modulated and the phase relationship of the transmitter and receiver signal is compared. The velocity of light is calculated from the relationship between the changes in the phase and the light path.

Michelson Interferometer – Quantifying Light Sources, Multiplying Knowledge

With the aid of two mirrors in a Michelson arrangement, light is brought to interference. While moving one of the mirrors, the alteration in the interference pattern is observed, and the wavelength of the laser light is determined.

High-resolution on the optical base plate or compact on the optical bench expert

Michelson interferometer with optical bench expert

Item No.: P2220502

Michelson interferometer with optical bench expert

Grating and prism spectrometer – White light can do so much more


Dispersion and resolving power of a grating spectroscope –
Item No. P2210305

The diffracted light from a periodic line grating is observed with a goniometer. The diffraction angles of spectral lines in different orders of diffraction are measured for the spectral lines from a Hg spectral lamp. By using gratings with different grating constants the angular spectral dispersion in dependence on grating constant is determined.
The effect of the total number of grating lines taking part in the diffraction is observed by reducing the beam width with an adjustable slit and the diffraction on that slit is taken into account. The spectral resolving power of a grating with a given grating constant and useful beam width is observed and compared with theoretical considerations.

Interference experiment with digital array camera — diffraction at a glance

Interference experiment

Interference experiment
Item No. P2220103

By dividing up the wave-front of a beam of light at the Fresnel mirror and the Fresnel biprism, interference is produced. The wavelength is determined from the interference patterns.

Consider the following items to add real value to your existing optics collection

component holder

Component holder
Item No. 08043-00

Designed for optical set-ups on the optical bench (Art No. 08281-00) or the optical base plate (Art No. 08750-00) with a beam height of 150mm.

Ring for component holder
Item No. 08044-00

In conjunction with the component holder, all components with a diameter of d= 40mm can be used with the aid of a simple and intuitive magnet system.

Digital array camera

Digital array camera
Item No. 35612-99

With this device, the light intensity received from the CCD sensor can be examined as a function of position (in pixels or mm) of time.

Experimental Lamp Laser/LED

light experiment
LED Light

Experimental Lamp
Item No. 08770-00

Combined LED- and Laser-light source for generating parallel and divergent light beams.


  • Switchable between parallel light beams (red laser) and divergent white light (LED)
  • Laser switchable between 1, 3 and 5 light beams
  • LED light source with integrated diaphragm holder
  • Laser deactivated by key switch
  • Student-safe operation
  • operated by a power supply or storage battery (rechargeable)

For further information on our products, speak to our STEM expert, Martin Lewis, via the contact form.