Why lightbulbs don't EXPLODE (explosion included)

[@johannbauer2863]

Just found your channel At the beginning I wasn't sure whether this was a shitpost channel (came from the short with the table) or an educational one. But holy shit, this is extremely underrated, everything is well written and understandably visualized 10/10 :O

[@Maribro4]

From what I've seen, it's an educational shitpost channel. I mean this video started with him shoving a lightbulb in his mouth lol

[@KnowArt]

thanks a lot

[@KnowArt]

well said

[@Dudeguymansir]

I thought his voice was computer generated in the shorts (my first exposure too). Was relieved to put a face to the voice! Also, look into the difference between resistance and resistivity, @KnowArt

[@RadenHZ26]

Well this is a shitpost channel with less shit and more education, but still shitpost.

[@yhubtfufvcfyfc]

I once was in a Physics competition where we built incandescent bulbs with pencil lead inside of a vacuum chamber. Our best attempts made one single pencil lead shine so bright that you couldn't look straight at it and it illuminated the entire lab significantly more brightly than the usual lamps. Sadly it burned out in under a minute. Good times!

[@KnowArt]

awesome! My dad was the physics teacher at school and we did the same. He had to sign the burn marks on the tables...

[@godzilla928]

This channel is so unfairly underrated...

[@srg1555]

The stench of evaporating spit from the hot light bulb. 0:14

[@fahadamer9537]

I really liked your KZbin Shorts but your long videos are even better and more engaging. Thanks for all of the good work.

[@thecjweej2761]

Why is he handsome?

[@Sboooose]

OH NO HE'S HOT

[@OmgItsTheWigeon]

Damn it he is..

[@honghaivotruong4159]

No he is not

[@thecjweej2761]

@@honghaivotruong4159 bro felt the need to comment just so he could put someone down. How colorful.

[@thijsbergman2424]

​@@thecjweej2761you don't understand subjectivity, do you

[@omenous6280]

Nice video Can't wait to be in a conversation about light bulbs in 20 years and suddenly get a flashback about this, so I can finally put this knowledge to use.

[@KnowArt]

Since 2012 it has been illegal to sell certain incandescent lightbulbs in the Netherlands. Since then they have been adding more and more variants to the ban list. Our kids will think it is crazy that light came from a glowing wire!

[@ankurar6492]

Black belt in nerd lmao 0:50

[@KnowArt]

he really is!

[@bluedog2008]

Dang

[@cptbaker]

​@@KnowArtThat's got to be one of the finest ways of saying someone has a masters. 😂

[@IchDuForeverExplorering]

i learned electron technique in my job, but i was always thinking why do they build in resistors in circuits, i had no clue what the purpose of resistors could be

[@purringraven3648]

Simple things like thickness :)

[@PinkCrocodile]

Always feels nice when i find a small and really good KZbin channel

[@VicJang]

One of the best science education channels there are. Up there with the big names. Great job.

[@WannabeHollywood]

Something that may seem so complicated, when in reality it’s simple! Loving this channel 🚨‼️

[@calabrais]

I just started getting recommended this channel and love it. May the algorithm smile upon you.

[@DLockholm]

"Black Belt in Nerd" Instantly subscribed, period.

[@no_time1691]

if this video has taught me anything its that im going to put a teardrop shaped lightbulb into my mouth

[@KnowArt]

well, now you know which ones will taste spicy

[@Dudeguymansir]

I have dreams where I eat glass. Like, “ah great, another damn lightbulb. I hate chewing glass. My teeth and gums will hurt and I’m scared to swallow the glass and sharp metal again. I don’t remember if it cuts me on the way out or not. Here we go…” Visceral thumbnail for that reason. To me at least 😅

[@Produkt_R]

Your brothers accent gave it away. Leuke vids!

[@ArnaldurBjarnason]

I love your speech cadence. Also, the animations are amazing. This new format is good too. Keep it up!

[@simplicityd8703]

Found you when doom scrolling through shorts and immediately left my doom scroll and binged all your videos These are amazing

[@WilliamDye-willdye]

Great question! Many of the greatest breakthroughs in history started with some form of the question "but why doesn't it just", including Newton's laws and relativity.

[@wowalamoiz9489]

You HIGHLY give off Steve Mould vibes

[@distortion1]

3:43 that would be a great wallpaper 😂😂

[@LouisCognault]

Well made and informative video! A bit sad the audio wasn’t that great when you recorded your brother, but I’m sure you’ll find a better mic position or better mic altogether next times!

[@samwallaceart288]

That spark-shot though

[@ganagal6546]

you should have more views :)

[@KnowArt]

thanks! It´s going well on tiktok and instagram, so I guess I just need a bit more patience with youtube.

[@Simon-dm8zv]

Great video. But why the odd symbols for current and voltage at 1:16?

[@baffled_hawk]

You look like you'd be a great Dr. Who.

[@baffled_hawk]

I meant that as a compliment

[@XwezzyO]

Love these videos

[@KnowArt]

thanks The plan is to make more of these long videos this year. But no promises! All my time is currently taken up by short videos

[@XpertEngineer12]

Everybody is coming back AFTER his shorts got popular lol

[@prathamshenoy9840]

but.. you know these coil heaters right? The ones that we use in the kitchen instead of gas? Their coil is Thicker. Doesn't that mean lower resistance? Then how do they get so hot like 1500Watts?

[@Alex-lc1bv]

Power does not determine heat. Amperage does. That is why power transmission lines use such high voltages. With higher voltage, you can reduce the amperage while sending the same amount of power. This makes less heat and, therefore, reduces power loss.

[@youssefbeltagy7465]

Unfortunately you are wrong. In this context (resistors/wires), the power applied to the resistor is always converted to heat and light. For a simple resistor, the power is the voltage applied to the resistor multiplied by the current through it. What you are describing are power transmission systems. They are not simple resistors. Ohm's law doesn't cleanly apply to them and so the relationship between current, voltage, and resistance is not upheld. However, it would still be true that the power applied to the wires is converted to heat and light if we only focus on the wires. In fact, light bulbs aren't simple resistors either. They get hotter so their resistance likely increases. I expect light bulbs to initially draw a lot of current (if we assume power sockets are perfect voltage sources) and consume a lot of power. But as the light bulbs get hotter, their resistance would increase and they would draw less current and expend less power. This is a classic negative feedback loop. We would need an oscilloscope to test this, though.

[@Wrulfy]

When you were moving out to ask for help, I though you were gonna check for electroboom

[@lefotografion]

I'm glad he didn't

[@blockPawn1924]

I enjoyed the video. I also enjoyed being the one thousandth like, I can switch the like counter back and forth from 999 to 1k

[@lizzybach4254]

Omg, why is he so cute?😭😭

[@circuit10]

So I guess it’s like asking why the whole city’s water supply doesn’t come through your tap, it’s because the pipes aren’t thick enough? (as an analogy)

[@KnowArt]

eh, basically yes

[@ikcikor3670]

I don't remember this Jerma stream

[@djdynieldaniel1395]

Electrical engineer here. I don't know why the heck I watched this. I was expecting some kind of unicorns.

[@PriggarGaming]

3:45 why did i expect it to explode on your face Like why Maybe it was because of the thumbnail

[@gamebuster800]

i'm just trying to find out why your channel seemingly exploded out of nowhere. The heavily edited shorts seemed to have done the trick.

[@ml9867]

Fun Fact: an incandescent light bulb once exploded in our bathroom.

[@avidteadrinker]

OH NO HE’S CUTE🫣

[@LiminalSpaceMan192]

Ohm's Law baby

[@alecboi777]

HES A BASSIST

[@bigblackbadger1]

If the filament in a lightbulb can glow but not quite burn out, then why doesn’t the filament in a fuse glow?

[@chair1694]

Oof, that picture at the end showing the sparks hitting your hands, did it hurt?

[@KnowArt]

not at all, it's a fraction of a fraction of a second

[@EdwardChan.999]

Thought you're going to see ElectroBOOM...

[@YeloPartyHat]

I am a bit confused. Why does the lower rated lightbulb blow up but the other doesnt?

[@KnowArt]

It's rated for low watts, which means that it has relatively low resistance, so when I plug it into the wall outlet, which has high watts, too much electricity is flowing through because of the low resistance.

[@Old_Hickory_Jackson]

Dutch Doctor Who 💀💀

[@kerrywsmyth]

you people have 220 V power? That sounds very dangerous!!

[@Tortee2]

they have fuses built into their plugs. They have little shutters to prevent fork in outlet. They DONT have the entire metal prong be..EXPOSED metal (only half).

[@MememerforDreamers]

His voice are different from the camera

[@Dude8718]

3000 watts is Euro Privelege. Americans get like 1800

[@iurieysi9103]

did it dieded? u know what? I have always wondered - if you have the wires going to a lightbulb and the lightbulb filament is also a wire, which short-circuits the ones going to the bulb, why does the filament get hot but the wires don't? can u ask your nerd bro about this?

[@iurieysi9103]

is this also just because the difference in resistance? the wires must be less resistant than the filament?

[@KnowArt]

nice question. I'm not sure exactly, as heat creation is a bit complex in the real world if you want to know it exactly. It's a combination of factors. How hot it gets, influenced by the amount of power and the resistance of the material, and how fast it can cool down, determined by heat conductivity, surface area to volume ratio, etc.

[@bigblackbadger1]

Wow face reveal

[@akifhossain5122]

The explosion was pretty average sized. I definitely had a lot of personality

[@KnowArt]

haha

[@bidibidifortnitebattlepassi]

Nederlandet

[@Kasmironies]

0:44 you're in the Netherlands arent you

[@Kasmironies]

also the accent but like you know...

[@vinniebabyyy]

why is he attractive

[@Splarkszter]

This is soooooo oversimplified. Oversimplifing oversimplification can't be good.

[@gachanimestudios8348]

2:11 Well, R ∝ 1/A... so...