Was disappointed that Tesla wasn't mentioned for our AC grid system. Edison's way would work but hugely inefficient.

@Voo504Doo

Ай бұрын

yea how do you not mention tesla??

Good video but you forgot one key detail. Edison’s system is not what we use today. His system was garbage and he knew it because he insisted on using DC to power everything, and the issue with DC was voltage drop and huge currents on the main lines. He couldn’t send power long enough distances because the voltage would drop and the current through the wires was so high that making them thicker would either become way to expensive or they would just break under their own weight. Nikola Tesla came along and came up with the idea of using AC instead of DC. He won the battle of the currents and for good reason. He could transmit power much further than DC by using transformers. When he generated power it was relatively low voltage, so he’d step it up to thousands of volts with transformers, then would step the voltage back down with another transformer when it reached its destination. This meant that there would still be a high enough voltage at the destination and the current on the transmission lines would be relatively low making it possible for them to be much thinner and much cheaper. Tesla’s system is what we use today. Edison’s system could only power lights while Tesla’s system could power other things. After Tesla perfected this system he moved onto the idea of 3 phase power because it had 2 other advantages. 3 phase power could power one of Tesla’s other famous inventions: the 3 phase induction motor which was a huge invention that helped the industrial revolution move much faster. The other advantage of 3 phase power was that as long as it was connected to a balanced load like an induction motor, the 3 phases would cancel out and eliminate the need for a neutral wire allowing us to send triple the power with just one additional wire. He also invented the florescent light bulb. After all that is when he went kind of crazy, trying to transmit power wirelessly which did accidentally lead to the invention of radio. By the end of his life he had found that transmitting power wirelessly was just too inefficient compared to wires.

One of the better history of light I've ever seen. I worked for GE and had a chance to go to Nela Park, which was GE's Corporate Headquarters and home of GE'S Lighting R&D. In the late 90's GE had advanced lighting technologies that i finally saw come to market in the 2010's. GE has designed lighting technologies that were 15+ years ahead of the current lighting technologies... What a shame to see GE no longer in business.... Only 3 divisions of GE exist, but are stand alone businesses.... Sad!!!

@johnnysimes5082

4 ай бұрын

GE figured out (like most electricians figured out) that there's more money to be made in services than goods. You'd have to sell a lot of switches, receptacles, & wire to match what you can charge in a day installing those parts. GE sure invented a lot of great lighting tech, but at the end of the day, lighting parts are cheap and they just didn't want to be in a commodity business. Providing a service that few other people are good at is a better business model.

Great lesson in history. Very well done! Thank you.

The 90's music is one of my favorite! Love the Smells like teen spirit vibe in this video.

Thanks for sharing your knowledge

You have focused the lime light on an illuminating subject thanks from old New Orleans 🔥

Great explanation and history lesson. Thanks!

Hey, so I had a very interesting experience a couple days ago and I think it would make for a very fun and informative video. Basically, my ceiling fans are rated for/recommend 75w halogen bulbs. I had 75w halogen bulbs in both of them. After they both burned out last year (not at the same time), I replaced them. Well, now, about 15 months after one of them was replaced, it literally blew up a couple of days ago. Thankfully I wasn't sitting underneath it, because it also shattered the light cover, scattering glass all over the place. I was going to replace them with LEDs the next time they burned out, and I assume it would be perfectly safe and also better, but with such an odd occurrence, I'm a bit cautious now. I'd absolutely love and appreciate it if you would make a video about why this could have happened. I know I'm not the only one, so others could benefit as well, and the answers I've found from Google don't seem to be applicable to my situation since they had been working perfectly fine for an extended period before it happened, but I don't know that that necessarily disproves those in my context. Thanks for all the awesome content, I love your channel and you explain things incredibly well!

This format of video made it very easy and entertaining to digest

Really enjoy your videos my man.i did my apprenticeship in the Airforce. I noticed you mentioned you served in the Marines, very cool. I follow you on IG as well. 👍🥋🇺🇸

@RashawnGeske

16 күн бұрын

5 z2 It is so important to recognize the beautiful moments in life and share goodness. Let your words become reality for each of us! 33

As always, great education info. Thank you .👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍.

Recently I had a motion sensor light not wanting to go off in my home. Is it possible that heat being generated from some network equipment with in approx a 1 foot of the PIR is causing it to remain on?

Great job. I have always wondered why the mercury vapor and metal halide lights have to cool down so long before they will relight.

Im hoping for a better version of something that accomplished what LED tape does. Im doing a lot of it in commercial applications and it really does look nice and clean. What they make today puts out some incredible light and its fun picking out the color temperatures and lumen output. What makes me sick is that im putting a lot of it in places that are incredibly inconvenient to access and these things have a limited life. Some people leave them on night and day, accelerating the death date of the tape. When they burn out you have to go through a whole operation just to remove it before you can even get started putting the new back on and its very expensive. I use a heat gun and a screwdriver to get the sticky off. Apart from that i just want to see the cost of quality LED lighting get even cheaper

Dustin, I know electricity returns to its source or nothing works. But how does that work, specifically, take your common and ground being bonded together at the service panel. How can it be grounded and at the same time return to its source? If the ground is for fault current, and the common and ground are bonded together, why doesn’t that trip all the breakers. Current is constantly alternating between hot and common, right? Could you do a video on this maybe?

this is killer. well done man

Are occupancy/ motion switches also heat signature based?

So which one is the most efficient one ? Because you said that the 1990 invention wasn’t that efficient? I don’t know if i got it right or not but I think the 1980 ones are currently the most efficient?!

Hey, how does an Add-a-phase transformer work? I recently came across one that converted 240 single phase to 208 three phase to run a 5hp motor. Thankfully all I had to do was replace a couple start capacitors. The big question that I have is where does it get that third phase cause my C phase was showing some weird voltage.

Sulfur Lights have me Intrigued, but aren’t covered all that much. Any of you deal with them? They are basically Electrodeless Fluorescent Lamps, but just Sulfur in Quartz Glass. Granted they will probably never be as cheap from a mass production scale, but for Ultra-Bright lights their lifetime may be better thus *if they could be produced and sold* they may be better? Also they have very Daylight like light (*although I don’t know if this is due to non-sulfur dopants in part) Either way *i want one*.

Wait plants don't create any heat? Or is the blue color indicating low heat? Are the sensors just calibrated around human body temp?

Light, plus the introduction of caffeine brought in the Industrial Age and the idea of "night-shifts"!

I am doing a new semi-finished space in my barn. It will be a hangout area/mancave. If i plan on installing all smart bulbs (like lifx or philips hue), do I need to install light switches by code? There will be no balists, only screw-in BR30s. I cant think of a reason that I would need a physical light switch in there unless it's mandated. I'm going to run the lighting to dedicated breakers and could always just use those in an emergency. Thank you for all the help and videos.

@Voo504Doo

Ай бұрын

use animal fat

@GaryStango

Ай бұрын

@@Voo504Doo We do already make candles.

In many ways the with the possible exception of discovery of fire my man, the carbon arc lamp is the most important light source to date as the discovery of electric arc by Sir Humphry Davy, who around 1809, used a 2,000 cell battery and charcoal sticks to create a 4 inch arc. Although it wasn't until the early 1880s when they saw widespread use for streetlights as well as lighting large areas including factories, mills and shopping centers, this would eventually pave the way for many widely used and practical arc lighting sources in the next several decades, including but not limited to the neon lamp, fluorescent lamp, low pressure sodium, mercury vapor and it's closely related replacement, metal halide and high pressure sodium, xenon short arc and HMI.

Laser diodes have much regulations to surpass. Photonic crystals would be more for light sails than emissions.

Due to the pressure can’t some of those HID lamps and whatnot *explode* a little bit when dropped? I’ve heard rumors, but (luckily?) never dealt with one myself.

@Sparky-ww5re

5 ай бұрын

Yes depending on type. Metal halide, mercury vapor and high pressure sodium are fairly low pressure when cold, and do not pose a great hazard if dropped when cold, although all three types but especially metal halide operates under high pressure, 50 psi or greater when at full brightness, this along with chemical and thermal stress gradually weakens the quartz arc tube with use and sometimes fails violently, blasting red hot quartz shards in all directions when operated beyond the rated burning hours, this has been the cause of a number of serious fires in warehouses and similar settings. There are speciality lamps such as xenon short arc lamps that are filled to high pressure that can be compared to a small grenade when dropped, and are typically shipped with a ballistic shield that is only to be removed once the lamp is securely in the lamp housing, some of which require full body protection. When the lamp has burned for the specified hours, the ballistic shield is again placed on the lamp before removal from the fixture. These lamps are used where a very short arc is necessary, most commonly large video projectors found in theaters, and searchlights and are usually anywhere from a few hundred watts to several thousands of watts, requiring water cooling for the largest sizes.

What is next after LED?

I doubt there would be anything to replace LED. Maybe some new lighting technology may rival LED, but not fully replace it. Because first of all, the the theoretical efficacy for white light is 414 lumens per watt. Once a highly efficient green LED gets developed, the efficacy of the RGB mixed LED is predicted to reach up to 330 lumens per watt, almost 80 percent of the efficacy of a perfectly efficient white light. And I have seen some LED lamps that have the L70 rating (the amount of operating time it takes for the total output of the light source to drop down to 70 percent of it's initial output) of 300,000 hours, or just over 34 years. So yeah, LED isn't going to be replaced by anything anytime soon.

Led power!

Shazam! Vibes in the beginning

What is a bus bar?

No mention of lunar lighting?!

I love materials science. "we could do this, if only we had the proper materials.....

Funny how we have gone through hundreds of years, perfecting lighting to light the town, yet the city I live near that has all the stores and restaurants can't seem to keep their street lights burning at night. Further, many nations, including the United States, are eliminating incandescent bulbs because they say up to 99% (as mentioned) of the energy used is discharged as heat. While true, Chicago and other northern cities in February... how exactly is this a bad thing?

Good

You know that farts 💨 really do burn when lit.

Remember plasma?

😂 Ha-ram is pronounced HI RUM Maxim 😂

Oh and. It’s not a spinning Whirled. It’s Flat and motionless. Lol

hi

Hiram is not pronounced her-om. It's probounced hi-rum.

The invent of fire. Lol thts somethin.

Where would we be today if Andrew Jackson didn't discover electricity with his kite way back when?

@dallasarnold8615

5 ай бұрын

Now, that's funny !

@countrookularich4493

5 ай бұрын

@@dallasarnold8615 Good on you. I really don't think many people are getting it. 😃

Sorry but after you said Edison didn't make the light bulb but two other people did and you didn't provide any explanation I lost trust in everything else said.

The guy who created the filament was actually a black guy working for Edison. Little know fact...

@IceColdProfessional

5 ай бұрын

Facts.

@island_fl

4 ай бұрын

Lewis Latimer did not create the original filament but rather refined the process to create filament and made a longer lasting version. He improved it but did not create it.

@kenemanuel9190

4 ай бұрын

​@@island_flyes

@3x_lilced

4 ай бұрын

Amen to that 👍🏿

@andycopeland7051

4 ай бұрын

Actually not factual. See above reply. You can be forgiven for believing this because the people who teach you history don't know history themselves. It's hard to tell who is the useful idiot and who is an evil liar. So much today is just BLM, 1619, and culturally Marxist but those three are distinctions without a difference.

You were good up until the LEDs, then multiple errors

@dallasarnold8615

5 ай бұрын

Easily said. Like what for instance ?

You are about 50% incorrect On every thing of your understanding of lighting History. but nun the less there are things to learn from you my friend.