Research any topic before you write.

Find related topics. | Discover entities. | See connections. | Build a topical map.

Crookes radiometer

The Crookes radiometer (also known as a light mill) consists of an airtight glass bulb containing a partial vacuum, with a set of vanes which are mounted on a spindle inside. The vanes rotate when exposed to light, with faster rotation for more intense light, providing a quantitative measurement of electromagnetic radiation intensity.

Movements, Applications, Art & Measurement

Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.

Research this topic

Explore the main themes, entities and connections around Crookes radiometer. Start with the topic map, then use the sections below for research and deeper semantic analysis.

Explore this topic

Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.

Topics to explore

Browse the full topic structure. Each item opens a new analysis centered on that subject.

Overview

General description

Thermodynamic explanation

Explanations for the force on the vanes

All-black light mill

Horizontal vane light mill

Nanoscale light mill

Practical applications

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

Map overview Semantic statistics

Crookes radiometer

Nodes61
Edges60
Triples48
Avg. degree1.97
Density0.032787
Components1

How this topic connects Entity context

See the strongest relationship patterns around the current topic before diving into the raw triples.

Crookes radiometer

Top relations

related to Incorrect theories · 14
Crookes radiometer → Another, Arthur Schuster, Crookes, Finally, If, In, It, James Clerk Maxwell, Lebedev's, Nichols, Pyotr Lebedev, Schuster's, The, This
related to Currently accepted theory · 13
Crookes radiometer → As, Because, Crookes, From, Maxwell, Maxwell's, Osborne Reynolds, Reynolds, Reynolds's, Royal Society, The, The Reynolds, When
related to Nanoscale light mill · 8
Crookes radiometer → Berkeley, California, Crookes, In, Princeton, Richard Beth, The, University
related to Movement with absorption · 6
Crookes radiometer → Crookes, If, In, The, This, When
related to Origin of the name · 4
Crookes radiometer → Crookes, Latin, The, This
related to Explanations for the force on the vanes · 2
Crookes radiometer → Crookes, Over

Important terminology Word statistics

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

vanes radiometer light side vane black pressure effect heat force radiation glass temperature sides crookes vacuum bulb air mill gas

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
the Nichols radiometerinstance ofbut can be measured with devices0.80text
Crookes radiometerrelated to Currently accepted theoryThe0.60section
Crookes radiometerrelated to Currently accepted theoryOsborne Reynolds0.60section
Crookes radiometerrelated to Currently accepted theoryReynolds0.60section
Crookes radiometerrelated to Currently accepted theoryCrookes0.60section
Crookes radiometerrelated to Currently accepted theoryReynolds's0.60section
Crookes radiometerrelated to Currently accepted theoryAs0.60section
Crookes radiometerrelated to Currently accepted theoryWhen0.60section
Crookes radiometerrelated to Currently accepted theoryBecause0.60section
Crookes radiometerrelated to Currently accepted theoryFrom0.60section
Crookes radiometerrelated to Currently accepted theoryThe Reynolds0.60section
Crookes radiometerrelated to Currently accepted theoryMaxwell0.60section

Related concept clusters Concept neighborhoods

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

    Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.

    Min side: 3
    For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.