Shopping on line can be easy, simple and save you lots of money. It can also take a lot of your time, frustrate you, and result in unwanted purchases. Now the same can be said for regular high street shopping, but with the vast opportunity presented by the Internet it will pay you to spend a few minutes reading this and understanding how to better optimize your Joule shopping experience:
1. Compare - without doubt the biggest advantage that the Joule offers shoppers today is the ability to compare thousands of Joule at a time. This is a great thing, but not necessarily all the time! Too much can be daunting at times so take advantage of the great comparison sites and where possible let them do the hard work for you.
2. Research - if it has been said it will be on the internet. Ignorance is no longer a justifiable reason for buying the wrong thing. Take the time to research in detail everything that you could possible want to know about
3. Testimonials - don't know anybody that has bought a Joule? Wrong! If the Joule is good the internet will let you know. Use the Internet as a friend and get testimonials before you buy.
4. Questions - Got a question about Joule then search the Forums, FAQ's, Blogs etc. Don't be afraid to ask .....
5. Reputation - Never heard of the company selling Joule? Don't worry, no reason why you should know every company in the world, but you know someone that does! Use the internet to find out what people are saying about Joule and build up a picture of their reputation for sales, returns, customer service, delivery etc.
6. Returns - still worried that even after all of the above your Joule wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.
7. Feedback - happy with your Joule then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.
8. Security - check for the yellow padlock on the Joule site before you buy, and the s after http:/ /i.e. https:// = a secure site
9. Contact - got a question about Joule, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.
10. Payment - ready to pay for your Joule, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.
The
joule (
International Phonetic Alphabet: or ) (symbol:
J) is the
SI unit of
energy. It was named after
James Prescott Joule for his work on the relationship between
Joule heating,
electricity and mechanical work.
Description
One joule is the work done, or energy expended, by a
force of one
newton moving an object one metre along the direction of the force. This quantity is also denoted as a Newton-meter with the symbol N·m. Note that torque also has the same units as work, but the quantities are not identical. In elementary units:
1\, \mathrm{J}=1\, \mathrm{kg} \cdot \frac{\mathrm{m}^{2-->{\mathrm{s}^{2-->
One joule is also:
- The work required to move an electric charge of one coulomb through an electrical potential difference of one volt; or one coulomb volt, with the symbol C·V.
- The work done to produce power of one watt continuously for one second; or one watt second (compare kilowatt-hour), with the symbol W·s.
History
A joule is the mechanical equivalent of heat meaning the number of units of work in which the unit of heat can perform.. Its value was found by James Prescott Joule in experiments that showed the mechanical energy Joule's equivalent, and represented by the symbol J. The term was first introduced by Dr. Mayer of Heilbronn.
Conversions
1 joule is exactly 107
ergs.
1 joule is approximately equal to:
- 6.24150636309 eV (electronvolts)
- 0.238845896628 cal (calorie) (small calories, lower case c)
- 2.390 kilocalorie, Calories (food energy, upper case C)
- 9.47817120313 BTU (British thermal unit)
- 0.737562149277 ft·lbf (foot-pound force)
- 23.7 ft·pdl (foot poundals)
- 2.7778 kilowatt-hour
- 2.7778 watt-hour
- 9.8692 litre-atmosphere (unit)
Units defined in terms of the joule include:
Useful to remember:
- 1 joule = 1 newton-meter = 1 watt-second
1 joule in everyday life is approximately:
- the energy required to lift a small apple (102 gram) one meter against Earth's gravity.
- the amount of energy, as heat, that a quiet person produces every hundredth of a second.
- the energy required to heat one gram of dry, cool Earth's atmosphere by 1 degree Celsius.
- one hundredth of the energy a person can get by drinking a single 5 mm diameter droplet of beer.
=== SI multiples ===
{{SI multiples|unit=joule|symbol=J|note=Common multiples are in bold face|m=|k=|mc=|M=|n=|G=|p=|T=-->
See also
References
- The adoption of joules as units of energy, FAO/WHO Ad Hoc Committee of Experts on Energy and Protein, 1971. A report on the changeover from calories to joules in nutrition.
External links
- Unit conversion from joule
- Online Joule Converter
The
joule (
International Phonetic Alphabet: or ) (symbol:
J) is the
SI unit of
energy. It was named after
James Prescott Joule for his work on the relationship between
Joule heating,
electricity and
mechanical work.
Description
One joule is the work done, or energy expended, by a
force of one newton moving an object one
metre along the direction of the force. This quantity is also denoted as a Newton-meter with the symbol N·m. Note that
torque also has the same units as work, but the quantities are not identical. In elementary units:
1\, \mathrm{J}=1\, \mathrm{kg} \cdot \frac{\mathrm{m}^{2-->{\mathrm{s}^{2-->
One joule is also:
- The work required to move an electric charge of one coulomb through an electrical potential difference of one volt; or one coulomb volt, with the symbol C·V.
- The work done to produce power of one watt continuously for one second; or one watt second (compare kilowatt-hour), with the symbol W·s.
History
A joule is the mechanical equivalent of heat meaning the number of units of work in which the unit of heat can perform.. Its value was found by
James Prescott Joule in experiments that showed the mechanical energy Joule's equivalent, and represented by the symbol J. The term was first introduced by Dr. Mayer of Heilbronn.
Conversions
1 joule is exactly 107
ergs.
1 joule is approximately equal to:
- 6.24150636309 eV (electronvolts)
- 0.238845896628 cal (calorie) (small calories, lower case c)
- 2.390 kilocalorie, Calories (food energy, upper case C)
- 9.47817120313 BTU (British thermal unit)
- 0.737562149277 ft·lbf (foot-pound force)
- 23.7 ft·pdl (foot poundals)
- 2.7778 kilowatt-hour
- 2.7778 watt-hour
- 9.8692 litre-atmosphere (unit)
Units defined in terms of the joule include:
- 1 thermochemical calorie = 4.184 J
- 1 International Table calorie = 4.1868 J
- 1 watt-hour = 3600 J
- 1 kilowatt-hour = 3.6 J (or 3.6 MJ)
Useful to remember:
- 1 joule = 1 newton-meter = 1 watt-second
1 joule in everyday life is approximately:
- the energy required to lift a small apple (102 gram) one meter against Earth's gravity.
- the amount of energy, as heat, that a quiet person produces every hundredth of a second.
- the energy required to heat one gram of dry, cool Earth's atmosphere by 1 degree Celsius.
- one hundredth of the energy a person can get by drinking a single 5 mm diameter droplet of beer.
=== SI multiples ===
{{SI multiples|unit=joule|symbol=J|note=Common multiples are in bold face|m=|k=|mc=|M=|n=|G=|p=|T=-->
See also
References
- The adoption of joules as units of energy, FAO/WHO Ad Hoc Committee of Experts on Energy and Protein, 1971. A report on the changeover from calories to joules in nutrition.
External links
- Unit conversion from joule
- Online Joule Converter
Joule - Wikipedia, the free encyclopedia
The joule (written in lower case, pronounced /ˈdʒuːl/ or /ˈdʒaʊl/) (symbol: J) is the SI unit of energy measuring heat, electricity and mechanical work.
James Prescott Joule - Wikipedia, the free encyclopedia
James Prescott Joule FRS (pronounced /ˈdʒuːl/; [1] December 24, 1818 – October 11, 1889) was an English physicist (and brewer), born in Salford, Lancashire.
Joule Centre
The Joule Centre for Energy Research is a partnership of North West Universities, commercial organisations and other stakeholders associated with the energy industry
Definition: joule from Online Medical Dictionary
The Online Medical Dictionary is a searchable dictionary of definitions from medicine, science and technology.
Joule Events - Julie Flavell - Event Management - Production ...
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James Joule
So, who was James Prescott Joule? James Prescott Joule was born on 24th December 1818 in Salford, Lancashire, England. He came from a wealthy family who were involved in the ...
GCSE Physics: The joule (J)
Tutorials, tips and advice on GCSE Physics coursework and exams for students, parents and teachers.
Make a Joule thief.
Make a joule thief. This project has moved.... HERE! You can find the rest of the site at the link below. www.bigclive.com
Joule Consulting Engineers
A consulting structural engineering practice based in the centre of Manchester.
Designer Wedding and Engagement Rings Specialists | JOULE | Bringing ...
Designer Jewellery in North London ... London Jewellers. Established in 1975, JOULE Jewellers are retailers and designers of fine quality jewellery.
