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Crooks Radiometer

Name: Crooks Radiometer
Brand: Samtech Instruments
SKU: PHY-152
Rating: 4.4 (6 reviews)

In StockBulk orders available

SKU: PHY-152

★★★★☆4.4(6 reviews)

Demonstrates the effect of light energy on rotating vanes
Features four mica vanes with blackened and reflective surfaces
Enclosed in a partially evacuated glass bulb with sturdy stand support

SKU

PHY-152

Product Description

Best forClass 7–11

BoardsCBSE · ICSE

UseDemonstration

Made inIndia

A Crookes radiometer — light falling on black-and-silver vanes makes them spin, a captivating demonstration of light/heat energy.

How it works

Place it in light
The black vane faces absorb more heat
The vanes spin inside the bulb

What students learn

Show light/heat drives the vanes
Compare black vs reflective surfaces
Discuss radiation and absorption

Try these experiments

Spin it in bright vs dim light
Compare sunlight and a lamp
Discuss why black sides absorb

Curriculum fit

Board	Class	Chapter / topic
CBSE	7	Heat
CBSE	11	Thermal Properties of Matter

In the box

Four mica vanes (black/reflective)
Sealed glass bulb

Pairs well with

Heat Absorption ModelPHY-150

Heat Conductivity ModelPHY-149

Questions

Frequently Asked Questions

The Crooks Radiometer is well suited to secondary and senior secondary students (typically Classes 8 to 12) and works for both teacher demonstrations and student practicals as per CBSE, ICSE and State board science curricula.

Yes. As a manufacturer, Samtech Labs offers competitive bulk pricing for schools, dealers and institutions, with full support for government (GeM) tenders. A minimum order quantity applies; contact us on WhatsApp for a quote.

We dispatch across India, with typical delivery in about 4 to 5 working days depending on location and order size. Bulk and institutional orders are packed securely for safe transit.

Every product is manufactured in-house at our Ambala Cantt facility and quality-checked before dispatch. Samtech Labs (JAYSEE brand) has supplied school science equipment since 1959. Reach out on WhatsApp for warranty and replacement details.

The Manufacturer

Made in India by Samtech Labs

Samtech Labs (JAYSEE brand) is a trusted manufacturer of school science and STEM laboratory equipment, based in Ambala Cantt, India, and serving educators since 1959. We supply 600+ physics, chemistry, biology, astronomy and renewable-energy teaching kits to schools, dealers and institutions across India, with competitive bulk pricing and full support for government (GeM) tenders.

Learn more about Samtech Labs →