Underwater WIFI test for actioncamera SHOCK !

[Metsaman]

Bravo ! . Nice tarten slipper MM

 

Thanks. ..

[silky fox]

Found this.

[Metsaman]

They have to use some low frequency... 2.4 Ghz is not working under water...

[openspaceman]

They have to use some low frequency... 2.4 Ghz is not working under water...

 

Not too surprising in that a microwave cooker works at about 2.4GHz in order that the water absorbs it at that frequency and heats up.

[Metsaman]

Not too surprising in that a microwave cooker works at about 2.4GHz in order that the water absorbs it at that frequency and heats up.

 

It surprise Me that it won't work under water, even short distance because open area WIFI range tests I get almost 200 meters range...

[openspaceman]

It surprise Me that it won't work under water, even short distance because open area WIFI range tests I get almost 200 meters range...

 

Perhaps I didn't explain well enough. The radio waves travel though air because it does not markedly absorb them, hence they arrive at the antenna where they are absorbed and turned into electrical energy in the receiver. They cannot travel through water because as soon as they hit the water the water molecules absorb them and they raise the temperature by a minuscule amount as they are turned to heat.

 

In much the same way if you have a red light and you are looking at it from behind a sheet of glass you see the red light because the glass is transparent to red light. Change the glass to green glass and no red light gets through the glass because green glass absorbs red light so the photons never get to your eye.

[timbernut]

Openspaceman, you really listened at school!😀

[openspaceman]

Openspaceman, you really listened at school!😀

 

I wish, then maybe I would have got a proper job and retired at 50 like my contemporaries who were surgeons, civil engineers and surgeons

[Stubby]

I wish, then maybe I would have got a proper job and retired at 50 like my contemporaries who were surgeons, civil engineers and surgeons

 

The one who is a civil engineerr and a surgeon must be really clever

[Metsaman]

Perhaps I didn't explain well enough. The radio waves travel though air because it does not markedly absorb them, hence they arrive at the antenna where they are absorbed and turned into electrical energy in the receiver. They cannot travel through water because as soon as they hit the water the water molecules absorb them and they raise the temperature by a minuscule amount as they are turned to heat.

 

In much the same way if you have a red light and you are looking at it from behind a sheet of glass you see the red light because the glass is transparent to red light. Change the glass to green glass and no red light gets through the glass because green glass absorbs red light so the photons never get to your eye.

 

Ok, I understand that is impossible use WIFI conection under water but I have to say that I make nice test...