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technology

Technology ("science of craft", from Greek τέχνη, techne, "art, skill, cunning of hand"; and -λογία, -logia) is the sum of any techniques, skills, methods, and processes used in the production of goods or services or in the accomplishment of objectives, such as scientific investigation. Technology can be the knowledge of techniques, processes, and the like, or it can be embedded in machines to allow for operation without detailed knowledge of their workings. Systems (e.g. machines) applying technology by taking an input, changing it according to the system's use, and then producing an outcome are referred to as technology systems or technological systems.
The simplest form of technology is the development and use of basic tools. The prehistoric invention of shaped stone tools followed by the discovery of how to control fire increased sources of food. The later Neolithic Revolution extended this, and quadrupled the sustenance available from a territory. The invention of the wheel helped humans to travel in and control their environment.
Developments in historic times, including the printing press, the telephone, and the Internet, have lessened physical barriers to communication and allowed humans to interact freely on a global scale.
Technology has many effects. It has helped develop more advanced economies (including today's global economy) and has allowed the rise of a leisure class. Many technological processes produce unwanted by-products known as pollution and deplete natural resources to the detriment of Earth's environment. Innovations have always influenced the values of a society and raised new questions in the ethics of technology. Examples include the rise of the notion of efficiency in terms of human productivity, and the challenges of bioethics.
Philosophical debates have arisen over the use of technology, with disagreements over whether technology improves the human condition or worsens it. Neo-Luddism, anarcho-primitivism, and similar reactionary movements criticize the pervasiveness of technology, arguing that it harms the environment and alienates people; proponents of ideologies such as transhumanism and techno-progressivism view continued technological progress as beneficial to society and the human condition.

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  1. D

    price a bathroom for a friend of a friend

    here goes,take out old bath toilet and basin,remove tiles from around bath,remove shower and riser re route all waste and hot and cold pipework, re-position toilet and basin,heating pipework needs extended and radiator moved fit all new appliances,re tile around bath only to ceiling,make...
  2. C

    new career skills or train 4 trade skills

    im have been looking at these two plumbing courses and i am stuck on which one to choose if any. so anyone who has been on one of these courses please leave a comment because i would value the opinion of someone who has gone through either one of these and have been able to come out the...
  3. B

    Rads The Good The Bad and The Ugly

    Who rates which rads the best and the worst - by manufacturer / supplier and why?
  4. N

    any help im confused

    hi everyone and sorry if this has already been discussed just i couldnt find any post about this really. im starting a plumbing course in a couple of weeks time at my local college. its an evening class and when i applied for this i was on the understanding that the course i was goiong for was...
  5. C

    Is this new look website ok ?

    The old system seemed to work fine but this new one we find a bit of a nuisance what says the rest of you ? We thought we had logged on to the wrong site at first. Why the change Mr. Moderator ? centralheatking
  6. D

    Expansion vessel sizing

    I was working out the expansion vessel required for a CH system the other day with the known formula, when the guy I was working with produced an 'app' on his iPhone that did it for you. He downloaded it for free, and we both arrived at the same result. I don't have an iphone, but handy for...
  7. J

    Apprentice Plumber?

    Hi guy, I'm not too sure if this is the right place to put this, but i am 19 years old, I have been driving my own car just over a year and have City And Guilds Level 2 In plumbing, but have no work experience, which is what i am seeking. Can anyone help me out, either direct me with any help...
  8. B

    a sunday pick me up

    The doctor comes in and says 'Ah, I see you've regained consciousness. Now you probably won't remember, but I'm afraid you were in a pile-up on the motorway.' 'You're going to be OK, you'll walk again, everything seems to be OK, but there is a bit of bad news and I'm going to break it to you...
  9. C

    magnaclean and fernox magnetic cleaner

    hI , has anyone had any experience with the Adey and fernox magnetic cleaner and if they do make a resonable difference in the performance of the heating system . Thanx
  10. C

    Pplumbing career

    Hello everyone, I've just joined the forum and was hoping your experience will help me with a career decision. I'm sure you get asked this question a great many times - I'm looking to change career and have started researching gaining the professionally required skills needed to become a fully...
  11. R

    innapropriate use of fittings

    well this 5 year old wimpy house made me laugh, what do you think?:D i counted 24 push fits in total and 3-4'' copper pipe. it leaks every where too.
  12. W

    Working for British Gas

    I have recently been offered the position of apprentice technical installation engineer with Britsh Gas. I was wondering what kind of a company are they to work for as I have heard differing opinions on the pressures and benefits of being an engineer with BS. Any inbiased and honest opinions...
  13. S

    gas pipe size

    Hi folks looked at a boiler change today combi to combi!existing boiler is supplied in 15mm.It is supplied from meter in 22 for about 6m into kitchen then 22x15x15 to four burner cooker then 2.5m to boiler.put u gauge on at boiler and operated dhw at max and all four rings on cooker on and got...
  14. F

    in a bit of a mess - New Plumbing qualifications

    Colleges are taking flak but it appears its not their fault! Vocational students left in the dark as qualifications undergo reform | Education | The Guardian try this
  15. L

    Air source heat pump advice

    Im looking into installing a air source heat pump. Is it possible to install diectly a ufh system? The system requires about 4kw. I have been told it must be installed with a thermalstore. The problem I have is lack of space for the thermalstore. Thanks Len
  16. M

    purging info

    Hi guys, i have just read a book today which suggests that you do not need to do any calculations on domestic systems when purging. You just purge 0.035 m3. Is this correct? Cheers
  17. S

    Rad corrosion

    saw a job today on a fairly new system was a leaking rad. The water from the bleed was clear but the puddle on the floor and where the bulky inlet is joined to the rad was like a big lump of brown black snot. Really thick, not watery at all. I could understand that the system probably hasnt been...
  18. T

    Fixing a push-button toilet.

    Hi, I have a pushbutton toilet which developed a fault - having dismantled the push button part I see a black rubber bulb which when squeezed pushes air through to the syphon and operates the flush. The rubber has perished and split so no longer works so I need a new one, trouble is I...
  19. O

    Brilliant Plumbers in the Brighton Area

    There are a lot of brickbats thrown at the Plumbing Trade and very few bouquets. So with the Mod's permission I hope to address that in a small way, if I am out of order please feel free to edit this tread. Having used the same plumber for the last 25 years I was somewhat upset to find...
  20. S

    Which manufacturer

    Hello. I was after some help please, I have searched the forum and can't find anything on the matter. I'm due to start re-plumbing my house next week and need to order the materials. I have decided to go with BPEX barrier pipe (unless someone knows something I don't :]) & push fit...
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