Optics System 2 – code: 4864.29

Optics System 2

Code: 4864.29

An intermediate system for geometrical and physical optics

The Optics System 2 is designed to study composition of light, light polarization, refraction index as well as many additional aspects of light reflection and refraction.

The system contains a Hartl apparatus, which allows the student to perform many experiments related to the reflection of light on mirrors and to the refraction through transparent bodies.
Also included is our specially designed Altay Optics Box, designed to investigate polarisation in various solutions. Additionally you can study photoresistance, photometry and verification of Malus’ Law.

Size: 50x45x15 cm
Weight: 6.5 kg
Track Lenght: 61 cm
Weight: 7.0 kg
Packing: durable aluminium carry case with foam inserts

Equipment Needed

Equipment Suggested
RED Light Sensor (code 4840.18)
RED Sensor Universal Adapter ( code 4831.00)
Tripod Stand (code 4830.46)


  • Hartl Disk
  • Optical Bench
  • Universal Base with knob
  • Biconvex Lens for Hartl Disk
  • Biconcave Lens for Hartl Disk
  • Trapezoidal Prism for Hartl Disk
  • Triangular Prism for Hartl Disk
  • Deformable Mirror for Hartl Disk
  • Plane Mirror for Hartl Disk
  • Refraction Index Vessel for Hartl Disk
  • Polarization Tank
  • Pair of polarizing filter
  • Photometer
  • Transformer
  • Ray optics and colour mixing box with lamp, coloured filters, slits, mirrors
  • White metal screen


  • Light reflection of a plane mirror and flexible mirror
  • Light refraction in a prism and through a converging or a diverging lens
  • Light refraction through different shaped materials
  • Refraction index of a liquid and
  • Polarisation of light
  • Total refraction prism
  • Rotation of the polarisation plane in a sugar solution
  • Investigating mixing of colours
  • Focal length of a lens
  • Malus’ Law
  • Investigations in quantitative


  • Principles of bi-concave, bi-convex lenses and mirrors
  • Mixing colours
  • Fermat’s principle
  • Determine the focal length of a lens
  • Hartl apparatus
  • Inverse square law of light
  • Light reflection and refraction
  • Malus’ Law
  • Photometry
  • Prism
  • Refraction index of a glass and a liquid
  • Rotation of light
  • Snell’s Law
  • Total reflection
EXAMPLE OF USE: Optical activity

Observe the rotation of light using a sugar solution.

Some substances such as sugar will react when a beam of light is incident on it. They rotate the polarisation plane of the light around its direction of propagation.
This optical activity is a phenomenon connected with the “asymmetry by reflection” of the molecules of many substances. The degree of rotation is determined by the rotational power of the optically active solution present and by the amount of molecules of the solution that interact with the beam of light. The directional change of the light is also affected by degree of concentration of the solution and distance the light must travel through it. Other features such as temperature and wavelength of light are also important.

The above formula defines the specific rotatory power of a substance at a given temperature and wavelength.

Optics system 2 experimental setup to show rotation of light using a sugar solution