WEBVTT

00:00:00.080 --> 00:00:05.200
thanks for watching techwiki click the subscribe button then enable

00:00:03.200 --> 00:00:10.320
notifications with the bell icon so you won't miss any future videos so picture

00:00:07.759 --> 00:00:14.320
this you just wired your desktop pc up to some uber fast internet connection

00:00:12.400 --> 00:00:17.840
which is like super exciting because surely this will be no more lagging out

00:00:16.320 --> 00:00:22.160
of your favorite games or thrilling skype dates then eager to experience

00:00:20.640 --> 00:00:27.039
this kind of speed on your laptop or mobile device you buy a fancy looking

00:00:24.400 --> 00:00:30.240
wi-fi router you key in your password wait what

00:00:28.240 --> 00:00:34.320
your speeds aren't even half of what you're getting with the wired connection

00:00:32.239 --> 00:00:41.120
what gives well unfortunately wireless is pretty much

00:00:38.000 --> 00:00:43.120
always gonna be slower than wired it's a

00:00:41.120 --> 00:00:47.920
near universal truth that becomes more and more obvious the faster you try to

00:00:45.600 --> 00:00:54.079
go even if you spend tons of money on high-end wireless gear but then okay now

00:00:51.200 --> 00:00:59.359
bear with me here because em waves do move faster through the air than

00:00:56.960 --> 00:01:04.479
electrons do through a wire so why is it well let's start with the

00:01:01.920 --> 00:01:08.960
most obvious signal range if you're using an Ethernet cable and you want

00:01:06.320 --> 00:01:13.920
gigabit speeds you can have a cable run of up to 100 meters that's roughly as

00:01:11.520 --> 00:01:18.640
long as a football field this is because the signal inside the cable doesn't

00:01:16.080 --> 00:01:24.400
deteriorate appreciably until you have a longer cable run but radio signals

00:01:21.520 --> 00:01:28.960
flying through the air such as wi-fi are much more prone to signal degradation

00:01:27.200 --> 00:01:33.840
unlike a physical cable which has a copper wire inside that only carries

00:01:31.759 --> 00:01:38.240
network traffic and is wrapped up in materials to shield the signal from

00:01:35.360 --> 00:01:42.159
interference wi-fi signals are just blasted everywhere meaning they have to

00:01:40.240 --> 00:01:47.759
compete with walls your roommate's microwave and other network traffic you

00:01:45.520 --> 00:01:52.720
see unlike Ethernet where your device gets one dedicated pipe that runs to

00:01:50.640 --> 00:01:57.920
your modem or your router there's only so much spectrum available for your

00:01:55.360 --> 00:02:02.079
wi-fi enabled laptop and your phone and anything else and what that means is

00:02:00.159 --> 00:02:07.439
that your device will often be broadcasting on the same frequency or

00:02:04.719 --> 00:02:11.920
channel as others which can lead to more interference that can further degrade

00:02:09.440 --> 00:02:16.720
the signal and give your router more work to do to sort it all out but okay

00:02:14.319 --> 00:02:20.480
hold on a second Linus you can hook up lots of wired devices to a router as

00:02:18.720 --> 00:02:24.000
well so doesn't your router have to figure out where all those different

00:02:22.000 --> 00:02:25.920
signals are supposed to go yes

00:02:25.040 --> 00:02:32.160
but wi-fi and Ethernet have different strategies to combat packet loss which

00:02:30.480 --> 00:02:37.040
is exactly what it sounds like when a chunk or a packet of data doesn't reach

00:02:34.640 --> 00:02:41.519
its destination oftentimes this can occur due to a collision when two

00:02:39.200 --> 00:02:46.160
devices try to transmit it at precisely the same time and if this happens the

00:02:43.680 --> 00:02:50.400
packets have to be resent so the way that an Ethernet connection avoids

00:02:48.000 --> 00:02:54.160
collisions is that once the sender determines that its path to the

00:02:51.840 --> 00:02:58.239
destination is clear it sends the packet immediately if the path is busy the

00:02:56.400 --> 00:03:02.480
sender will send the data as soon as the path is clear again

00:03:00.000 --> 00:03:08.400
wi-fi on the other hand introduces a small delay once the path becomes clear

00:03:05.920 --> 00:03:13.440
the idea is that since a wireless router can't magically detect a collision in

00:03:10.480 --> 00:03:19.040
mid-air this delay reduces the risk of collisions but as it does so it also

00:03:16.560 --> 00:03:24.159
adds more latency and although many leaps in wi-fi technology have been made

00:03:21.280 --> 00:03:30.319
over the years it still resembles much older school communications protocols in

00:03:27.040 --> 00:03:32.879
one important way it is half duplex

00:03:30.319 --> 00:03:37.519
meaning that a wi-fi gadget's antenna can only be sending

00:03:34.959 --> 00:03:41.440
or receiving at any given moment not both

00:03:38.640 --> 00:03:44.959
now full duplex wireless is in the works but it's still experimental and suffers

00:03:43.360 --> 00:03:48.480
from its own special kind of interference that results from the

00:03:46.560 --> 00:03:53.280
antenna trying to deal with both inbound and outbound signals at the same time by

00:03:50.959 --> 00:03:58.000
contrast Ethernet has been full duplex for quite some time now as it's not

00:03:55.760 --> 00:04:02.319
difficult to simply put one wire in for transmitting data and another one for

00:03:59.760 --> 00:04:05.680
receiving it on the same cable so all other things being equal

00:04:03.920 --> 00:04:10.239
don't be surprised if your wi-fi connection always seems just a bit

00:04:08.000 --> 00:04:15.920
slower even if you do walk around with your smartphone neurotically duct taped

00:04:12.159 --> 00:04:17.519
directly to a router just please please

00:04:15.920 --> 00:04:21.440
go faster speaking of going faster if you're a

00:04:19.680 --> 00:04:25.680
freelancer or small business owner and you want to get your work done faster

00:04:23.280 --> 00:04:28.560
check out freshbooks freshbooks is the cloud accounting software that's

00:04:27.040 --> 00:04:32.479
designed for the way you want to work and it's the simplest easiest way to be

00:04:30.560 --> 00:04:36.720
more productive more organized and perhaps most importantly get paid faster

00:04:35.199 --> 00:04:40.240
you can create and send professional looking invoices in less than 30 seconds

00:04:38.720 --> 00:04:44.479
you can set up online payments with just a couple of clicks to get paid up to

00:04:41.840 --> 00:04:48.639
four days faster and you can see when your client has seen your invoice to put

00:04:46.240 --> 00:04:52.639
an end to the guessing games so don't take my word for it try out freshbooks

00:04:50.639 --> 00:04:55.680
for free they've got a 30 day free trial available to our viewers down below and

00:04:54.720 --> 00:05:00.639
then guys when you do sign up that's freshbooks.comtechquickie

00:04:58.720 --> 00:05:04.479
make sure you enter techquickie in the how did you hear about us section

00:05:03.040 --> 00:05:07.199
so thanks for watching guys like dislike check out our other videos don't forget

00:05:06.240 --> 00:05:12.080
to leave a comment if you have suggestions for future fastest possibles we do read those things you know and

00:05:10.800 --> 00:05:16.800
subscribe because if you don't subscribe bees

00:05:14.720 --> 00:05:20.800
bees will eat your hair they do that you know

00:05:19.520 --> 00:05:27.639
it's not misinformation we're a tech channel people aren't expecting

00:05:23.840 --> 00:05:27.639
you know factual accuracy