Science Discussion Thread
Hrishi
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Tell that bird to keep a feet on the ground at the same time , I am sure she'll get electrocuted.
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Bird's feet do not conduct electricity quite well. And also , they have no contact with ground or anything with lower potential while sitting(sh1tting) on the high tension wires above your head .
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Bird's feet do not conduct electricity quite well. And also , they have no contact with ground or anything with lower potential while sitting(sh1tting) on the high tension wires above your head .
harshilsharma63
DIY FTW!
I don;t think that'll happen. I've myself touched just once wire directly from wall socket and nothing ever happened. However, I felt shock only when I touched both the wires.
OP
Zangetsu
I am the master of my Fate.
u were wearing slippers & the circuit was not complete.
but when u touched other wires then u get shocked..the same thing is with birds
if a Bird is sitting in one wire (circuit is not completed) so no shock but if at the same time other parallel wires comes in contact with one (on which bird is sitting)
then Bird will get shocked.
when I was a Student I saw two Crows dancing on the floor (they were dying actually) and a group of boys around them watching..
I wondered at that time what happened to them but then later realized they got shocked (as one of the boy standing there told me)
OK...so its clear that circuit is not complete & there is no earthing so u don't get shock.
so, will these principle still hold true if the current passing through the wires is > 25k Volts?
harshilsharma63
DIY FTW!
Actually it's not about the circuit getting complete. It's about developing potential difference. Circuit will be completed when both live and neutral wires come in contact with each other though a resistance or short-circuit.
flyingcow
Shibe
why dont satellites use low freq. e.m.(electromagnetic) waves, cause im sure we can broadcast using them too..
and also today i learnt about ionosphere in college, but how can we send signals in space if they end up reflecting them back? or is it that they refract partially? then why use it? that wil cause a lot of loss? right?
and also today i learnt about ionosphere in college, but how can we send signals in space if they end up reflecting them back? or is it that they refract partially? then why use it? that wil cause a lot of loss? right?
OP
Zangetsu
I am the master of my Fate.
Potential Difference is there when a current flows from higher potential to lower potential (+ve to -ve)
its Ohm's law if u say
also if a circuit is not complete then u cant start TubeLights,Bulbs & other electrical appliances
SaiyanGoku
kamehameha!!
harshilsharma63
DIY FTW!
Reflection occurs when the incidence angle is greater than critical angle. For ionosphere, the critical angle is different for different frequencies/ wavelengths.
www.tpub.com/neets/book10/40e.htm
What is your point?
OP
Zangetsu
I am the master of my Fate.
short-circuit is not a complete circuit
also the current still flow if I m not wrong thru the birds body
harshilsharma63
DIY FTW!
I don't think current flows through the bird as if it would, it would get fried.
Hrishi
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The current will only flow when there is a potential difference and the medium is conductor of electrons.
However , in case of birds , the claws and beaks are insulator and therefore no current can pass.
When you touch the earth while holding the nude wire , you'll get heavily electrocuted because of the extensive difference in potential , but if you are wearing insulator and are not in contact with the ground , the difference of potential is lesser , so I think lesser amount of current will pass through for a while.
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BTW , I have a new Question for you guys , I am still wondering about the answer possible .
Q. In what language do Mute and Deaf people ( Deaf and Mute from birth ) think ?? For instance , I think in English most of the time , while communicating with myself.
However , in case of birds , the claws and beaks are insulator and therefore no current can pass.
When you touch the earth while holding the nude wire , you'll get heavily electrocuted because of the extensive difference in potential , but if you are wearing insulator and are not in contact with the ground , the difference of potential is lesser , so I think lesser amount of current will pass through for a while.
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BTW , I have a new Question for you guys , I am still wondering about the answer possible .
Q. In what language do Mute and Deaf people ( Deaf and Mute from birth ) think ?? For instance , I think in English most of the time , while communicating with myself.
How do birds sit on high-voltage power lines without getting electrocuted? | MIT School of Engineering
@rishi,beaks & claws have nothing to do with this & btw no living thing can be insulator even if some of its body parts can be considered close to an insulator.Bio 101:70% cell is water.
@rishi,beaks & claws have nothing to do with this & btw no living thing can be insulator even if some of its body parts can be considered close to an insulator.Bio 101:70% cell is water.
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OP
Zangetsu
I am the master of my Fate.
Nice...Helicopter example is good
Once I opened the washing machine & I put my hand inside soap water (I was bare footed) & I got a sudden shock but after I wear rubber slippers I haven't got any shock
in whichever language they are taught in School...might be any language the person learned
bcoz they are not Blind
Hrishi
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So is it just the potential difference , which helps this ?? I mean the body has no role-play at all ??
I mean how do they hear it in the brain ?? I mean how does it feel like ?
nikufellow
In the zone
Seems you guys are all well versed in currents and potential differences have a question for ya'll
If 'current' be regarded as flow of electrons, the direction of flow being +ve to - ve according to conventions, can anybody explain as to how current flows in an AC (alternating current) transmission system.
Take for instance our supply frequency of 50hz, which means we have polarity reversals (+ve and -ve cycles) every 1/50th of a second, from which we can infer that the electron will be oscillating about its mean position back and forth but no net displacement , then how come there is correct flow ?
have a question for ya'll If 'current' be regarded as flow of electrons, the direction of flow being +ve to - ve according to conventions, can anybody explain as to how current flows in an AC (alternating current) transmission system.
Take for instance our supply frequency of 50hz, which means we have polarity reversals (+ve and -ve cycles) every 1/50th of a second, from which we can infer that the electron will be oscillating about its mean position back and forth but no net displacement , then how come there is correct flow ?
Hrishi
******************
Seems you guys are all well versed in currents and potential differences
If 'current' be regarded as flow of electrons, the direction of flow being +ve to - ve according to conventions, can anybody explain as to how current flows in an AC (alternating current) transmission system.
Take for instance our supply frequency of 50hz, which means we have polarity reversals (+ve and -ve cycles) every 1/50th of a second, from which we can infer that the electron will be oscillating about its mean position back and forth but no net displacement , then how come there is correct flow ?
AFAIK , One end of the power source has more number of electrons/negative charges accumulated compared to the other end. This creates a potential difference , and the body tries to balance this .
This happens in both ways, in an AC current.
A reminder : Current is the charge passing through a cross-sectional area per second and what basically keeps on moving back and forth is the fields ( electric and magentic ) .
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juliastiles406
Right off the assembly line
nice thread.....great answers guys..........i like the last one.....
gopi_vbboy
Cyborg Agent
what is happening here?
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