'If I touch my phone in a specific way, I can make pizza appear at my door.'
- Anna Kendrick
Submitted 5 weeks ago by Early_To_Risa@sh.itjust.works to greentext@sh.itjust.works
https://sh.itjust.works/pictrs/image/a0e281d8-5e1c-46e6-b88f-1f123e80d5fc.jpeg
'If I touch my phone in a specific way, I can make pizza appear at my door.'
Next thing you’ll tell me is I can get text and images from someone half way around the world I’ve never even met.
Smh my head
wesker@lemmy.sdf.org 5 weeks ago
With no perceivable latency, either. Yeah, right. Nice try illuminati.
sugar_in_your_tea@sh.itjust.works 5 weeks ago
I’m amazed at how little latency we have in our calls to the other side of the world. Technology is amazing.
elvith@feddit.org 5 weeks ago
The earth’s diameter is about 12.700km. that’s 12.700.000m.
Assuming it were a perfect sphere (it isn’t, but that shold give an estimate), the distance on the surface “to the other side of the world” would be
180°/360°*pi*12.700.000m=19.949.113m
- also assuming not using satellite communications.Phone signals will either travel as electric fields in copper cables, as radio waves or as light waves in a fiber channel. All cases travel with speed of light
c=299.792.458 m/s
That means, that the time to send the signal to the other end of the world takes about
19.949.113m/299.792.458 m/s = 0,0667s
. Now add a few electronic components on there to refresh the signal or transfer it from one medium to another (e.g. the radio tower receiving the RF signal and sending it via fibre out). All of these add a few milliseconds - that’s in the range of 0,001s to 0,01s.You usually start to notice that sound is delayed for movies when it’s more than 0,2s delayed - and that’s with the visual cues. While calling someone, you cannot see them which gives even more leeway. So you probably won’t really notice the delay in those calls.
FiskFisk33@startrek.website 5 weeks ago
I disagree. Landlines used to have near zero latency, modern phone calls often have north of 100ms.
SomethingBurger@jlai.lu 5 weeks ago
Latency is very perceivable. Try synchronising a beat through the phone.
danc4498@lemmy.world 5 weeks ago
You could type a bunch of words and click a button and send those words to another device for ONLY 10¢. Yeah right knights of the old republic!