Notes and Queries Thread

CHRISNOIR
CHRISNOIR Posts: 1,400
edited November 2009 in The bottom bracket
For all the odd questions life throws up...


When I unplug my charger from my mobile phone it displays a message advising me to 'Unplug charger from power source and save energy'. Does this mean that if I left the charger plugged to the wall yet disconnected from the phone it still uses energy? And if so where does it go?
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Comments

  • _Brun_
    _Brun_ Posts: 1,740
    If you leave it plugged in does it stay warm to the touch?
  • redvee
    redvee Posts: 11,922
    I leave mine plugged in but switch it off, is this the same as unplugging?
    I've added a signature to prove it is still possible.
  • pedylan
    pedylan Posts: 768
    I think this is a numbers game. If there are tens of millions of mobiles in the UK, even if the power consumption of an individual charger left plugged in is negligible, the total is significant.

    So say 1 watt per hour per charger, 1000 phones = 1kw and 1 million = 1000kw, 10 million = 10,000kw etc.

    Trouble is, all this is cr*p as the power consumption isn't negligible - it's nil.

    And compared to the rest of our energy consumption, if we're trying to reduce CO2, why worry about phone chargers?
    Where the neon madmen climb
  • Where does the electricity go? In this case, I think much much more must have gone keeping your computer running, the light on, while you typed the question, the 70 odd viewers, each running their computers, with their lights on while they read it :)


    Do not read this message and save energy
  • Cressers
    Cressers Posts: 1,329
    It's a similar situation to the dismantling of public railings and the mass campaign to gather aluminium cooking pots 'for the War Effort' that happened in WW2. A means for the'average person' to feel as if they were contributing, and be seen to be contributing, to the Effort. In fact the aluminium gathered wasn't coverted into Spitfires as it was of too variable a quality, and soon after VE day the railings were rapidly reinstalled to re-enclose those private spaces that had become public.

    Don't be fooled. This is just another version of the same scam...
  • Mister W
    Mister W Posts: 791
    Power consumption isn't nil but it is very, very, very tiny. You'd be better off focussing on different energy saving plans.
  • CHRISNOIR
    CHRISNOIR Posts: 1,400
    Cool, seems well answered! Anyone else got any niggling queries* to put to the collective wisdom of Cake Stop?


    *Apart from the one about an aircraft on a tradmill - it always causes internet warfare...
  • The old fat chargers that came with your first mobile years and years ago would have been worth unplugging, as they used considerably more than modern smps chargers.... But modern chargers use almost nothing at all when not charging.
  • If a cargo aircraft is in flight, carrying 100 Parrots, when all the Parrots are in flight (within the hold), is the aircraft lighter than when they are all perched?
    "In many ways, my story was that of a raging, Christ-like figure who hauled himself off the cross, looked up at the Romans with blood in his eyes and said 'My turn, sock cookers'"

    @gietvangent
  • teagar
    teagar Posts: 2,100
    If a cargo aircraft is in flight, carrying 100 Parrots, when all the Parrots are in flight (within the hold), is the aircraft lighter than when they are all perched?


    No.
    Note: the above post is an opinion and not fact. It might be a lie.
  • CHRISNOIR wrote:
    Cool, seems well answered! Anyone else got any niggling queries* to put to the collective wisdom of Cake Stop?


    *Apart from the one about an aircraft on a tradmill - it always causes internet warfare...

    Do you meam like 'why does dropped toast always land sticky side down on the carpet'? Bit dull that one.

    Another one, that really should be directed to my family, is why am I the only person in our house that understands that light switches can be used to switch lights off as well as on? Yes, I have tried explaining this and given practical demonstrations. They just stare at me with blank expressions and tell me not to shout ....

    Finally, what would happen if you put an aircraft on a treadmill? :wink:
    I should get out more (on the bike)
  • teagar wrote:
    If a cargo aircraft is in flight, carrying 100 Parrots, when all the Parrots are in flight (within the hold), is the aircraft lighter than when they are all perched?


    No.

    Why not?
    "In many ways, my story was that of a raging, Christ-like figure who hauled himself off the cross, looked up at the Romans with blood in his eyes and said 'My turn, sock cookers'"

    @gietvangent
  • Mister W
    Mister W Posts: 791
    Yes :D
  • teagar
    teagar Posts: 2,100
    teagar wrote:
    If a cargo aircraft is in flight, carrying 100 Parrots, when all the Parrots are in flight (within the hold), is the aircraft lighter than when they are all perched?


    No.

    Why not?

    On various levels:

    The mass of the aircraft doesn't change because parrots arn't the aircraft....

    The thrust generated by the aircraft wings needed to keep the aircraft at the same altitude would be the same since the force of the downdraft generated by the parrots (equal to their weight) would be exerted on the bottom of the cargo bay.
    Note: the above post is an opinion and not fact. It might be a lie.
  • Laws of physics... The produce pressure in the opposing direction making them the same mass...
  • The thrust generated by the aircraft wings needed to keep the aircraft at the same altitude would be the same since the force of the downdraft generated by the parrots (equal to their weight) would be exerted on the bottom of the cargo bay
    .

    This is correct.[/quote]
  • Vino
    Vino Posts: 184
    The thrust generated by the aircraft wings needed to keep the aircraft at the same altitude would be the same since the force of the downdraft generated by the parrots (equal to their weight) would be exerted on the bottom of the cargo bay
    .

    This is correct.
    [/quote]

    EEs a long week training and tring out new specialized bike on test and theese question hurt my head. I must now find intelligent blond scottish woman to explain.

    Ave Confused Calves
  • The thrust generated by the aircraft wings needed to keep the aircraft at the same altitude would be the same since the force of the downdraft generated by the parrots (equal to their weight) would be exerted on the bottom of the cargo bay
    .

    This is correct.
    [/quote]

    Ok so say the plane was parked on the worlds largest set of scales and the parrots were all perched there and the weight was recorded.

    Would the weight change if the parrots started flying around in the hold of the plane? The plane is producing no thrust therefore is what you said still relevant?

    I spose the same could be applied to a ship with a hold full of parrots and how low it sat in the water?

    I'm intrigured now.

    Vive les All Blacks!!! [:D]
  • iainment
    iainment Posts: 992
    muffin top wrote:
    CHRISNOIR wrote:
    Cool, seems well answered! Anyone else got any niggling queries* to put to the collective wisdom of Cake Stop?


    *Apart from the one about an aircraft on a tradmill - it always causes internet warfare...

    Do you meam like 'why does dropped toast always land sticky side down on the carpet'? Bit dull that one.
    Another one, that really should be directed to my family, is why am I the only person in our house that understands that light switches can be used to switch lights off as well as on? Yes, I have tried explaining this and given practical demonstrations. They just stare at me with blank expressions and tell me not to shout ....

    Finally, what would happen if you put an aircraft on a treadmill? :wink:

    Cats always land on their feet, so if you strapped a slice of buttered toast onto a cats back and threw it out of a top floor window which side up would it land ? Buttered side down or cats feet down?
    Old hippies don't die, they just lie low until the laughter stops and their time comes round again.
    Joseph Gallivan
  • teagar
    teagar Posts: 2,100
    The thrust generated by the aircraft wings needed to keep the aircraft at the same altitude would be the same since the force of the downdraft generated by the parrots (equal to their weight) would be exerted on the bottom of the cargo bay
    .

    This is correct.

    Ok so say the plane was parked on the worlds largest set of scales and the parrots were all perched there and the weight was recorded.

    Would the weight change if the parrots started flying around in the hold of the plane? The plane is producing no thrust therefore is what you said still relevant?

    I spose the same could be applied to a ship with a hold full of parrots and how low it sat in the water?

    I'm intrigured now.

    Then the scales would be providing the thrust. If the aeroplane is stationary (vertically speaking), then it will always be the same.

    With the ship, it's the water providing the vertical upward force
    Note: the above post is an opinion and not fact. It might be a lie.
  • teagar wrote:
    The thrust generated by the aircraft wings needed to keep the aircraft at the same altitude would be the same since the force of the downdraft generated by the parrots (equal to their weight) would be exerted on the bottom of the cargo bay
    .

    This is correct.

    Ok so say the plane was parked on the worlds largest set of scales and the parrots were all perched there and the weight was recorded.

    Would the weight change if the parrots started flying around in the hold of the plane? The plane is producing no thrust therefore is what you said still relevant?

    I spose the same could be applied to a ship with a hold full of parrots and how low it sat in the water?

    I'm intrigured now.

    Then the scales would be providing the thrust. If the aeroplane is stationary (vertically speaking), then it will always be the same.

    With the ship, it's the water providing the vertical upward force

    Bloody hell. I'll stick to investment banking ....

    Anyone wanna buy a Sub prime Mortgage Backed Security?

    Vive les All Blacks!!! [:D]
  • Only if you can explain what it is, exactly. As i reckon only about 10% of the people dealing in them ever could.
    "In many ways, my story was that of a raging, Christ-like figure who hauled himself off the cross, looked up at the Romans with blood in his eyes and said 'My turn, sock cookers'"

    @gietvangent
  • Anonymous
    Anonymous Posts: 79,667
    I wonder if Teagar has a sense of humour ?
  • Only if you can explain what it is, exactly. As i reckon only about 10% of the people dealing in them ever could.

    See here:

    http://www.slideshare.net/guesta9d12e/s ... mer-277484

    Vive les All Blacks!!! [:D]
  • The thrust generated by the aircraft wings needed to keep the aircraft at the same altitude would be the same since the force of the downdraft generated by the parrots (equal to their weight) would be exerted on the bottom of the cargo bay
    .

    This is correct.
    [/quote]

    What if the parrots all fly to the top of the hold, then dive together (i.e. without exerting downdraft while diving)?
  • teagar
    teagar Posts: 2,100
    The thrust generated by the aircraft wings needed to keep the aircraft at the same altitude would be the same since the force of the downdraft generated by the parrots (equal to their weight) would be exerted on the bottom of the cargo bay
    .

    This is correct.

    What if the parrots all fly to the top of the hold, then dive together (i.e. without exerting downdraft while diving)?

    Haha, then it gets trickier.

    If they fell (rather than flying downwards so to speak) then for that moment they were falling they would be "weightless", i.e. not exerting their weight or any force onto the airplane.
    Note: the above post is an opinion and not fact. It might be a lie.
  • Teagar, what's your definition of Thrust? Or at least what IS the definition of thrust?

    Doesn't it involve some kinda movement? If, so, then how are the scales exerting thrust?

    Also, what's the water got to do with it in the other example? The ship is going to displace water equal to it's weight (or something like that). So if all these pigeons are sitting around in the hold of the ship, ya know, chilling and and discussing who the've poohed on, and then they all take off into the air (but still within the hold of the ship but obviously not touching the shop), then SURELY the ship is now lighter therefore it rises higher in the water!?

    And do you reckon the Pope masturbates? :shock: What does he think of? If anyone says little choir boys, I'm calling the police! :roll:

    Vive les All Blacks!!! [:D]
  • Anonymous
    Anonymous Posts: 79,667
    Little choir boys. Call the cops :D:D:D
  • teagar
    teagar Posts: 2,100
    Teagar, what's your definition of Thrust? Or at least what IS the definition of thrust?

    Doesn't it involve some kinda movement? If, so, then how are the scales exerting thrust?

    Also, what's the water got to do with it in the other example? The ship is going to displace water equal to it's weight (or something like that). So if all these pigeons are sitting around in the hold of the ship, ya know, chilling and and discussing who the've poohed on, and then they all take off into the air (but still within the hold of the ship but obviously not touching the shop), then SURELY the ship is now lighter therefore it rises higher in the water!?

    And do you reckon the Pope masturbates? :shock: What does he think of? If anyone says little choir boys, I'm calling the police! :roll:

    Definition of thrust: : the force used in pushing; "the push of the water on the walls of the tank"; "the thrust of the jet engines"


    The ship is only "lighter" if the downwards force of the birds (created by the flapping of the wings) is dissapated over areas that arn't the boat. Birds arn't weightless
    As for the pope: Mother Teresa surely?

    I wonder how the term "one eye'd biship" came about, come to think of it...
    Note: the above post is an opinion and not fact. It might be a lie.
  • teagar wrote:
    Teagar, what's your definition of Thrust? Or at least what IS the definition of thrust?

    Doesn't it involve some kinda movement? If, so, then how are the scales exerting thrust?

    Also, what's the water got to do with it in the other example? The ship is going to displace water equal to it's weight (or something like that). So if all these pigeons are sitting around in the hold of the ship, ya know, chilling and and discussing who the've poohed on, and then they all take off into the air (but still within the hold of the ship but obviously not touching the shop), then SURELY the ship is now lighter therefore it rises higher in the water!?

    And do you reckon the Pope masturbates? :shock: What does he think of? If anyone says little choir boys, I'm calling the police! :roll:

    Definition of thrust: : the force used in pushing; "the push of the water on the walls of the tank"; "the thrust of the jet engines"


    The ship is only "lighter" if the downwards force of the birds (created by the flapping of the wings) is dissapated over areas that arn't the boat. Birds arn't weightless
    As for the pope: Mother Teresa surely?

    I wonder how the term "one eye'd biship" came about, come to think of it...

    I think I want to see this proved now. I'm not saying you're lying (although your tag line indicates otherwise!), I guess in my head it's hard to imagine a bird's wings providing thrust equal to their weight. Though I guess it makes sense. I'm not a scientist so it's all greek to me. I prefer derivatives and beta and alpha returns!

    Hmmm maybe Jeremy Clarkson could do this experiment? He could use a massive supertanker and say a few Apache gunships to represent the pigeons! .... Cos using actual pigeons would be dull! 8) :wink:

    Wow, I didn't know the Pope was into necrophilia?! :shock:

    Vive les All Blacks!!! [:D]