Question

saliva can produce electricity

theoretically.. it is possible!

Answer 1

then could we use it for powering electronic tools inside body such as pacemakers etc ?

Answer 2

could we not? I think it's possible

Answer 3

do we need metals or..

Answer 4

Yeah, \(1\mu W\) power can run hundreds of transistors on a microchip
http://news.psu.edu/story/310362/2014/04/03/research/tiny-power-generator-runs-spit

Answer 5

omg, I was literally just on this website.

Answer 6

By producing nearly 1 microwatt in power, this saliva-powered, micro-sized MFC already generates enough power to be directly used as an energy harvester in microelectronic applications," the researchers report in a recent issue of Nature Publishing Group's Asia Materials.

Answer 7

Here's a very stupid question:
Why do we even pay for electricity when it is all around us, even inside our body :/
Why can't we just learn how to wire it properly and never pay for it

Answer 8

In 2014 the total installed electricity generation summer capacity:[10] in the United States was `1,068.4 Gigawatts(GW)`, up 8.4 Gigawatts from 2013. The main energy sources for electricity generation include:

Thermal/Fossil 774.3 GW up 2.3 GW from 2013
Nuclear 98.6 GW down 0.6 GW from 2013
Hydropower 79.7 GW up 0.5 GW from 2013
Wind 64.2 GW up 4.2 GW from 2013

Answer 9

\(1\mu W\) is negligible compared to the nation need of \(1068~ GW\)

Answer 10

Compare \(10^{-6}\) and \(10^{12}\)

Answer 11

How much time do you take to walk from 1st floor to 10th floor in your appartment ?

Answer 12

Probably around 5 minutes? We can use the elevator instead :) Pay for that!

Answer 13

and what is your mass ?

Answer 14

set it as 2 ton

Answer 15

give some practical number

Answer 16

120 pounds

Answer 17

so you have managed to move a mass of 120 pounds by a height of 10 floors.

Answer 18

can you find the work that you have done on your body in moving it from 1st floor to 10th floor ?

Answer 19

assume 10 floors has a distance of 10 meter

Answer 20

mass = 120 pounds
height difference = 10 meter
work done = ?

Answer 21

1200..? What's the units?

Answer 22

work done = mgh

Answer 23

keep in mind,
you must do positive work to move from bottom to top because gravity is acting against your motion pulling you down

Answer 24

10 x 120 x g ?

Answer 25

Yes, what does that equal to

Answer 26

also you must convert pounds to kg

Answer 27

because all formulas in physics are tweaked to work for SI units

Answer 28

approximately 635040 mgh

Answer 29

doesn't look correct

Answer 30

mass = 120 pounds = 54 kg
distance = 10 meter
g = 10

work done = mgh = 54*10*10 = 5400 joules

Answer 31

And you took 5 minutes to do that simple task

Answer 32

so, power = 5400/(5*60) = 18W

Answer 33

That means you have produced a power of 18W

Answer 34

Our nation needs 10^12 W of power
how many people like you (18W) it takes to fulfill our nation's power need ?

Answer 35

I accidentally multiplied 120

Answer 36

I see..

Answer 37

don't understand the question above

Answer 38

USA needs 10^12 W of power
An average normal human like you can work at a rate of 18W


So, how many humans do we need to generate the power that USA needs, 10^12 W ?

Answer 39

10^12 / 18W

Answer 40

thats approximately 10^11,
what do you know about our present population count ?

Answer 41

and we must keep these 10^11 humans working 24x7 to generate just one country's power

Answer 42

7 billion

Answer 43

7 billion is the whole worlds population

Answer 44

our saliva might generate microwatts and can power simple microchips

Answer 45

but we humans need GIGA watts of power to run motors in factories and countless other electrical appliances

saliva / human hardwork simply cannot meet this great requirement

Answer 46

I'm addressing this q

```
Here's a very stupid question:
Why do we even pay for electricity when it is all around us, even inside our body :/
Why can't we just learn how to wire it properly and never pay for it
```

Answer 47

😭😭😭

Answer 48

Our home itself needs approximately 3000 W,

No matter how much saliva we spit or how hard we work our muscles, we can never generate 3000 W of power. How much do you pay to the power companies ?