Radiometers
Radiometers visually demonstrate the effects of light energy and radiation pressure.Encased in clear glass, they provide engaging visual demonstrations for classroom learning.Australian educators use radiometers to illustrate thermodynamic and optical concepts.
Crookes Radiometer Single for Heat and Light Energy
- Single Crookes radiometer for light and energy demonstrations
- Demonstrates the relationship between heat, light and gas molecular activity
- Shows that light is a form of energy
- Supports discussion of energy conversion in a visible way
- Rotor movement provides a clear classroom observation
- Size listed as 125 mm high × 75 mm diameter
- Suitable for school, university and teaching laboratory use
- Useful for physics, heat, light and energy demonstrations
- Refer to the product PDF for further information and experiment guidance
- Glass radiometer should be handled carefully
- Radiometer only, light source and accessories are not included
- Use under appropriate laboratory or educational supervision
AUD 43.90 (Ex GST)
Digital Lux Light Meter for Light Intensity Measurement
- Digital lux meter for measuring light intensity
- Measuring range listed as 0–50,000 Lux
- Three measuring ranges as listed
- 18 mm LCD display for clear reading visibility
- Over-input indication shown as “I”
- Sampling time listed as 0.4 second
- Operating temperature range from 0°C to 50°C
- Operating humidity less than 80% RH
- Suitable for laboratory, classroom and general light measurement use
- Useful for physics, environmental and lighting demonstrations
- Confirm measurement range and application suitability before use
- Use under appropriate laboratory or educational supervision
AUD 62.50 (Ex GST)
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Radiometers, including the Single Crookes Radiometer, are demonstration instruments used to illustrate energy transfer, light interaction, and molecular motion in physics classrooms and laboratory environments. The Crookes radiometer consists of a partially evacuated glass bulb containing a rotor with vanes that rotate when exposed to light or heat, providing a clear visual demonstration of energy conversion and gas molecule behaviour.
This instrument is commonly used to demonstrate how light energy can be converted into motion and how temperature differences influence molecular activity within a low-pressure environment. When exposed to a light source, the vanes rotate due to thermal effects caused by differential heating, allowing students to observe the relationship between heat, radiation, and molecular motion. It is widely used in education to support teaching of thermodynamics, kinetic theory of gases, and energy transfer principles.
With an approximate size of 125 mm height and 75 mm diameter, the Single Crookes Radiometer is suitable for classroom demonstrations, laboratory teaching, and science education environments. It provides a simple and effective way to visualise otherwise abstract concepts related to heat, light, and molecular energy behaviour.
For quality and compliance reference, ISO 9001 is a recognised quality management system standard supporting manufacturing consistency where supplier certification is available. IEC standards provide general guidance for safety and performance of laboratory and educational equipment, supporting safe use in teaching environments. NIST provides authoritative scientific resources and references related to thermodynamics and physical measurement, supporting the scientific principles demonstrated by radiometers. These references should be included only where supported by the manufacturer’s specifications and documentation.
For LabChoice Australia customers, Radiometers provide an engaging and effective demonstration tool for physics education, helping students understand energy transfer, light interaction, and molecular activity through clear visual observation.