Skip to content

UK Metric Association

For a single, rational measurement system

  • Home
  • What is metric?
    • Definitions
      • Metric Prefixes
      • Base Units
      • Derived Units
      • Approved Units
      • SI Diagrams
    • Writing metric
    • Speaking Metric
    • Sources and References
    • British Scientists
    • First International Prototypes
    • Australian Experience
    • South African Experience
    • UK Progress
      • Metrication Timeline
  • Why metric?
    • Metric is easy to use
    • Metric Is A Proper System
    • Metric is Powerful
    • Metric is a World Standard
    • People who endorse Metrication
    • Myths
  • Practical Help
    • Shopping
      • Buying food
      • Fair measurement for shoppers
      • Fair measurement for retailers
      • Getting a fair deal
      • Don’t be muddled by unfriendly practices
      • Unit prices
      • Buying home appliances
      • Understanding electrical appliances
      • Unfriendly practices when buying appliances
      • Television and computer screen sizes
      • How to complain
    • Cooking
      • How much to buy
      • Turkey Roasting Guide
    • Body and Health
      • Body weight
      • Body Mass Index
      • People’s height and weight
      • Baby weight and length
      • Advice for health professionals
    • Motoring
    • Home DIY
      • Metric measuring tapes
      • Dual measuring tapes
      • Kitchen planning
    • Temperature
    • Metric Supplies
  • The Case for Change
    • The mess we are in
    • Problems arising from two systems
      • Fuel Consumption
      • Road signage mess
      • Distance Information
      • Restriction signs
      • Road Contractors
      • Walking and Cycling
      • International travellers
    • Which system is better?
    • Principles of Changeover
    • Resistance to Change
    • What about free speech?
    • Cost of changing
    • Role of Government
    • Policy Areas
      • Retailing
      • Advertising
      • Road signs
      • Education
      • Weather reports
      • Land and property
  • Road Signage
    • Is Changing Expensive?
    • Metric signs on UK roads
    • International Experience
    • When is metric signage legal
    • Speed Limits
    • Gallery
  • What You Can Do
    • Briefing Note
    • Write to your MP
    • Speak Out
      • Speak out to broadcasters
      • Write to newspapers
    • Stand Up For Your Rights
    • Use Metric
    • Donate to UKMA
  • Press
    • Reasons for Metrication
    • Objections to Metrication
    • Comparison with Australia
    • Metrication Timeline
    • Decimalisation v Metrication
    • Extracts from Key Reports
    • Press articles
  • Publications
    • Newsletters
    • A very British mess
    • Metric signs ahead
    • Obtaining UKMA publications
    • Traffic Signs 2.0
    • Measurement unit survey
    • Vehicle Dimension Signs Report
  • Legislation
  • Consultations
  • Style Guide
  • About UKMA
    • Constitution
    • Membership of UKMA
    • Frequently asked questions
    • Contact
  • Twitter
  • Facebook
  • YouTube
  • Blog

J

Alphabetical index

A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z

joule

Unit of measurement of energy, symbol: J.

Twitter @UKMetric

My Tweets

Facebook @UKMetric

Facebook @UKMetric

Support us

Join UKMA

Donate to UKMA

Follow us

  • Twitter
  • Facebook
  • YouTube

Search this site

Site Map

  • Home
    • It’s time to move on
  • What is metric?
    • Definitions
      • Metric Prefixes
      • Base Units
      • Derived Units
      • Approved Units
      • SI Diagrams
    • Writing metric
    • Speaking Metric
    • Sources and References
    • British Scientists
    • First International Prototypes
    • Australian Experience
    • South African Experience
    • UK Progress
      • UK Metric Timeline
  • Why metric?
    • Metric is easy to use
    • Metric Is A Proper System
    • Metric is Powerful
    • Metric is a World Standard
    • People who endorse Metrication
      • A mountaineer
      • An architectural modeller
      • A chef
      • A former nurse
      • An education adviser
      • A software engineer
      • An oral poet
    • Myths
      • Myths about Metric
      • Myths about Imperial
      • Using Metric
      • Myths about British Metrication
      • Myths about metric internationally
      • Consumer Protection
  • Practical Help
    • Shopping
      • Buying food
      • Fair measurement for shoppers
      • Fair measurement for retailers
      • Getting a fair deal
      • Don’t be muddled by unfriendly practices
      • Unit prices
      • Buying home appliances
      • Understanding electrical appliances
      • Unfriendly practices when buying appliances
      • Television and computer screen sizes
      • How to complain
    • Cooking
      • How much to buy
      • Turkey Roasting Guide
    • Body and Health
      • Body weight
      • Body Mass Index
      • People’s height and weight
      • Baby weight and length
      • Advice for health professionals
    • Motoring
    • Home DIY
      • Metric measuring tapes
      • Dual measuring tapes
      • Kitchen planning
    • Temperature
    • Metric Supplies
  • The Case for Change
    • The mess we are in
    • Problems arising from two systems
      • Fuel Consumption
      • Road signage mess
      • Distance Information
      • Restriction signs
      • Road Contractors
      • Walking and Cycling
      • International travellers
    • Which system is better?
    • Principles of Changeover
    • Resistance to Change
    • What about free speech?
      • John Stuart Mill
    • Cost of changing
    • Role of Government
    • Policy Areas
      • Retailing
      • Advertising
      • Road signs
      • Education
      • Weather reports
      • Land and property
  • Road Signage
    • Is Changing Expensive?
    • Metric signs on UK roads
    • International Experience
    • When is metric signage legal
      • Detailed Analysis
    • Speed Limits
    • Gallery
  • What You Can Do
    • Briefing Note
    • Write to your MP
      • Sample Letters
      • Key Issues
    • Speak Out
      • Speak out to broadcasters
      • Write to newspapers
    • Stand Up For Your Rights
    • Use Metric
    • Donate to UKMA
  • Press
    • Reasons for Metrication
    • Objections to Metrication
    • Comparison with Australia
    • Metrication Timeline
    • Decimalisation v Metrication
    • Extracts from Key Reports
    • Press articles
      • Britain needs a single system of measurement
      • British metrication
      • Don’t make a martyr out of this mismatch
      • Historical perspectives
      • Imperial madness
      • Imperialism is not a force to be reckoned with
      • Let’s not measure ourselves by the imperial past
      • Made in Britain: Not made to measure
      • Measure for measure, a comedy of errors
      • Memo to Maggie
      • Metrication – let’s get on with it
      • Metrication in Ireland
      • On the level: go metric for good measure
      • The metric system in Britain 1851-1979
      • Time to ditch the language of the past
      • Time to stand up to the metric martyrs
      • TSI and metrication
      • Yards, metres, gallons or litres
  • Publications
    • Newsletters
    • A very British mess
      • Content and synopsis
    • Metric signs ahead
      • Content and synopsis
    • Obtaining UKMA publications
    • Traffic Signs 2.0
    • Measurement unit survey
    • Vehicle Dimension Signs Report
  • Legislation
  • Style Guide
  • Consultations
  • About UKMA
    • Constitution
    • Membership of UKMA
      • Joining the UK Metric Association
      • Renew
    • Frequently asked questions
    • Contact
    • Copyright statement
  • Blog
  • Home
  • What is metric?
    • Definitions
      • Metric Prefixes
      • Base Units
      • Derived Units
      • Approved Units
      • SI Diagrams
    • Writing metric
    • Speaking Metric
    • Sources and References
    • British Scientists
    • First International Prototypes
    • Australian Experience
    • South African Experience
    • UK Progress
      • Metrication Timeline
  • Why metric?
    • Metric is easy to use
    • Metric Is A Proper System
    • Metric is Powerful
    • Metric is a World Standard
    • People who endorse Metrication
    • Myths
  • Practical Help
    • Shopping
      • Buying food
      • Fair measurement for shoppers
      • Fair measurement for retailers
      • Getting a fair deal
      • Don’t be muddled by unfriendly practices
      • Unit prices
      • Buying home appliances
      • Understanding electrical appliances
      • Unfriendly practices when buying appliances
      • Television and computer screen sizes
      • How to complain
    • Cooking
      • How much to buy
      • Turkey Roasting Guide
    • Body and Health
      • Body weight
      • Body Mass Index
      • People’s height and weight
      • Baby weight and length
      • Advice for health professionals
    • Motoring
    • Home DIY
      • Metric measuring tapes
      • Dual measuring tapes
      • Kitchen planning
    • Temperature
    • Metric Supplies
  • The Case for Change
    • The mess we are in
    • Problems arising from two systems
      • Fuel Consumption
      • Road signage mess
      • Distance Information
      • Restriction signs
      • Road Contractors
      • Walking and Cycling
      • International travellers
    • Which system is better?
    • Principles of Changeover
    • Resistance to Change
    • What about free speech?
    • Cost of changing
    • Role of Government
    • Policy Areas
      • Retailing
      • Advertising
      • Road signs
      • Education
      • Weather reports
      • Land and property
  • Road Signage
    • Is Changing Expensive?
    • Metric signs on UK roads
    • International Experience
    • When is metric signage legal
    • Speed Limits
    • Gallery
  • What You Can Do
    • Briefing Note
    • Write to your MP
    • Speak Out
      • Speak out to broadcasters
      • Write to newspapers
    • Stand Up For Your Rights
    • Use Metric
    • Donate to UKMA
  • Press
    • Reasons for Metrication
    • Objections to Metrication
    • Comparison with Australia
    • Metrication Timeline
    • Decimalisation v Metrication
    • Extracts from Key Reports
    • Press articles
  • Publications
    • Newsletters
    • A very British mess
    • Metric signs ahead
    • Obtaining UKMA publications
    • Traffic Signs 2.0
    • Measurement unit survey
    • Vehicle Dimension Signs Report
  • Legislation
  • Consultations
  • Style Guide
  • About UKMA
    • Constitution
    • Membership of UKMA
    • Frequently asked questions
    • Contact
  • Twitter
  • Facebook
  • YouTube
  • Blog
UK Metric Association Powered by WordPress.com.