Switches are Clicky; Here's Why

  • Published: 12 August 2019
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    Click clack I was taken aback. Wonderin’ ‘bout those switches of light, yeah.
    Let’s find out what the point is of all that clacking, shall we?

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Comments • 3 707

  • im1who84u
    im1who84u  2 hours back

    I remember back in the sixties there was a type of wall switch that was called a "mercury switch" and it worked completely silent. It had a small glass bulb in it kinda shaped like a tic tac. On one side were the wires that needed to be connected to turn the light on. On the other end, was nothing. Also in the bulb was a blob of free floating mercury. The tic tac was able to be rocked or slanted so that the mercury would either be connecting the wires or on the other end not connecting the wires.

    I wonder if that system arced. I don't even see those sorts of wall switches for sale anymore. There's probably a good reason for that.

    Here's a photo of one I found on Google.

    • Nathan Shriver
      Nathan Shriver  38 minutes back

      Those were usually used as tilt switches.

  • Luke Henry
    Luke Henry  2 hours back


    • Joseph Weimer
      Joseph Weimer  3 hours back

      No one:

      Absolutely NO one:

      Like REALLY, no one:

      This guy: Why are switches clicky? Here's why.

      • AnDreIceCold
        AnDreIceCold  5 hours back

        Question: Isnt vacuum perfect insulation?

        • sparkb
          sparkb  6 hours back

          Nice wiring on that outlet

          • Noah Sprinkle
            Noah Sprinkle  7 hours back

            Every time one of your videos pops up in my feed it's something I never knew I needed to know but it's always enjoyable. You do good work, man.

            • Teresa Ellis
              Teresa Ellis  8 hours back

              I never knew light switches could be an interesting topic to talk about. Cool. :) And my son now knows why he managed to fry a hair dryer switch, and I know how the hair dryer broke. :P

              • MalcolmCooks
                MalcolmCooks  9 hours back

                thanks for acknowledging the superior safety of british plugs

                • Michael William Dale Francis

                  “(Switches click) because you’ve been lied to”

                  Had to contort your narrative pretty heavily to justify that click-bait, didn’t you?

                  The video was great, otherwise.

                  • A B
                    A B  12 hours back


                    • Andrei Maria
                      Andrei Maria  12 hours back

                      4:13 "Everything conducts electricity when you try hard enough"

                      • Ramon Palacio
                        Ramon Palacio  13 hours back

                        Why are American (and English I think) switches so different from the European ones? That's a question I always ask myself whenever I watch an American program...

                        • hafy day
                          hafy day  13 hours back

                          *Specimen* and *sparks*

                          • Bradley Whais
                            Bradley Whais  14 hours back

                            A perfect vacuum is a perfect insulator.

                            • DragonWolf5589
                              DragonWolf5589  14 hours back

                              I like how you says "very a a fe" and show a UK plug.. One thing I find interesting is USA is 110volts UK is 230-250volts lol and heaters here use 3000 Watts not 1500.. There's been few tins I switch something off at the wall and the socket sparks as I forgot to turn it off on the actual device. So even a switch has big sparks as when you plugged out the heater.. Except when you pull a plug you pull away.. When the switch sparks your hand is a till on the switch and BAM you get shocked

                              • MC_Matze
                                MC_Matze  14 hours back

                                why did it have to be fortnite on the switch? why

                                • Michael Moorhouse
                                  Michael Moorhouse  16 hours back

                                  Some of the first light switches used Mercury and wires dangling in them as the contact 'switch', circa 1880.
                                  As Swan (UK) and Edison (USA) had invented the light bulb but no switches - how to control them? When Lord Armstrong wired his house called Cragside, in Northumbria, UK* he used Hydro Electric power (DC) as the source but had to invent a light switch. His solution was to convert some vases (yes: think flowers + water) to contain mercury and have a wire that made contact into a pool of Mercury to complete the circuit.
                                  * Cragside is well, well worth a visit if you visiting the North of the UK: it is an amazing Hi-Tech Mansion by Victorian standards with all sorts of innovations such as central heating *_Wow_*, hydraulic lifts, fire alarms, electric lights etc. - Armstrong was the Elon Musk of his day being a Lawyer initially but then specialising in Hydraulics (most famous achievement: London Bridge opening mechanism, see various TV programs). Sadly the vases and light-switch-setup are not on display even as a recreation/replica; they seem lost to history.
                                  Source: https://www.buildingconservation.com/articles/cragside/cragside.htm and personal description of the curator in the Lounge (?) Drawing (?) Room when we got talking.
                                  Disclosure: no affiliation to Cragside or its owners The Nation Trust; a paid full price when I visited earlier this summer.

                                  • The Restoration of Dr Who

                                    are you running out of ideas?

                                    • Norman K
                                      Norman K  18 hours back

                                      Step 1. Go to Google
                                      Step 2. Search this keyword: 123moviesdaily
                                      Step 3. Enjoy!
                                      Switches are Clicky; Here's Why
                                      Because there's nothing out there. It's stupidity. Stupid people mingling with stupid people. Let them stupidify themselves. I've never been bothered with the need to rush out into the night. I hid in bars, because I didn't want to hide in factories. That's all. Sorry for all the millions, but I've never been lonely. I like myself. I'm the best form of entertainment I have. Let's drink more wine!

                                      • ObsoletePowerCorrupts
                                        ObsoletePowerCorrupts  18 hours back

                                        You're welcome.
                                        12:15 Moves subject to "Relays".

                                        • Kyosukedono
                                          Kyosukedono  18 hours back

                                          Next week's video: water is wet, here's why!
                                          Week after: cows go moo, here's why!
                                          After that: butts go poo, here's why!
                                          And after: I can't get a normal job and have to whore myself to people on youtube and adhere to their backwards standards for half a penny, here's why!
                                          Finally: adblock makes my stomach rumble, here's why!

                                          • Ryn’s Room!
                                            Ryn’s Room!  20 hours back

                                            Now I feel bad for balancing the light switches between on and off as a kid

                                            • P37R1X
                                              P37R1X  20 hours back

                                              Your effort trying to be ElectroBoom! almost worked!

                                              • Guillaume Globensky
                                                Guillaume Globensky  23 hours back

                                                I used to press switches and jam them halfway with my hand to kind of dim the lights as a kid. I know now it was really dangerous haha

                                                • Nons ツ
                                                  Nons ツ  24 hours back

                                                  Kids with cherry blue keyboard switches
                                                  *allow me to introduce myself*

                                                  • Rob Hoard
                                                    Rob Hoard  24 hours back

                                                    The speed of the dis connect is very important.

                                                    • Rob Hoard
                                                      Rob Hoard  24 hours back

                                                      The speed of the dis connect is very important.

                                                      • Rob Hoard
                                                        Rob Hoard  24 hours back

                                                        A switch is under greater load dis connecting a load.

                                                        • TheDodgyLodger
                                                          TheDodgyLodger  1 days back

                                                          I had a light switch go out this weekend and now I know exactly why. This explains everything as it was about to go out and now doesn't make an audible click at all and doesn't function.

                                                          • dugroz
                                                            dugroz  1 days back

                                                            When I was a kid there was a light switch in a storage room in our church - the switch was so "clicky" (and internally must have prevented arcing) that you could toggle it and step away for 1-2 seconds before the light would switch off. Fun was had.

                                                            • Marc Abbaticchio
                                                              Marc Abbaticchio  1 days back

                                                              Would you consider doing a video about CB radios and how they work?

                                                              • Vince Black
                                                                Vince Black  1 days back

                                                                Well put together video

                                                                • Paul Philpott
                                                                  Paul Philpott  1 days back

                                                                  Superb! Hysterical meets educational. Such a seemingly simple subject totally revealed in a fantastic way.

                                                                  • CrusherOfSkull
                                                                    CrusherOfSkull  1 days back


                                                                    • hobbified
                                                                      hobbified  1 days back

                                                                      1. Because there's a spring in there to provide a positive force keeping the switch in either the "on" or "off" position and not in between where it's liable to arc.
                                                                      2. Because it makes people happy.

                                                                      • 100 subs with no vid
                                                                        100 subs with no vid  1 days back

                                                                        *a 15 min video about the sound of a switch*

                                                                        • Disturbed Pyro
                                                                          Disturbed Pyro  1 days back

                                                                          A Switch is a flexible wooden stick your mom would........ummmmmm NO!

                                                                          • Libor Dostál
                                                                            Libor Dostál  1 days back

                                                                            What is a switch? What came after just killed me. :D :D :D

                                                                            • Andre Tellez
                                                                              Andre Tellez  1 days back

                                                                              Why is there such a big difference in heat between the flow of electricity through the wiring and the flow through air?

                                                                              • WeslomPo
                                                                                WeslomPo  1 days back

                                                                                So akward that you have wrong installed wall mount electric plugs (upside-down).

                                                                                • Michael Smith
                                                                                  Michael Smith  1 days back

                                                                                  The American power outlets make me feel uncomfortable.

                                                                                  • snickelman
                                                                                    snickelman  1 days back

                                                                                    Wow, the American education system sure is one of the worst in the western world.

                                                                                    • TheNewGreenIsBlue
                                                                                      TheNewGreenIsBlue  1 days back

                                                                                      OCD Alert @11:45 Those screws are not aligned.

                                                                                      • Emoticons
                                                                                        Emoticons  2 days back

                                                                                        Great to know that our switches in Switzerland are perfect then. It's impossible to cause arcs with those, though they are also totally over engineered.

                                                                                        • morefloordoor
                                                                                          morefloordoor  2 days back

                                                                                          I was hoping you would get electrocuted

                                                                                          • Luke Briggs
                                                                                            Luke Briggs  2 days back

                                                                                            Always found it interesting how different American switches are to Australian ones

                                                                                            • Robert Woolley
                                                                                              Robert Woolley  2 days back

                                                                                              Why don't US sockets have switches?

                                                                                              • letsPlay1196
                                                                                                letsPlay1196  2 days back

                                                                                                what if i can just take the switch from my wall and use it in my hand to turn the lights on and off, yes that'S a thing