What is LUMINANCE? (and Candela) | Optometrist Explains

Подписаться 84 тыс.

Просмотров 4,8 тыс.

50% 1

Welcome back!
Today we talk about luminance!
Lighting is by far my favourite topic when it comes to optics. Great lighting will look aesthetic and please my viewers.
Subscribe to the channel if you want to learn more about optics and lighting!

Опубликовано:

27 июл 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 19

@dominicestebanrice7460 2 месяца назад

You're correct....it's most certainly NOT simple.....but you did great, certainly better than the twenty or so other people I've watched who've had a crack at this. And I'm learning that not only is this field intrinsically complex but it turns out that physicists and astronomers use the same terms to mean different variables!

@maryannlupus2187 Год назад

This is a lot of info to take in and you explain it very well. The idea is fairly simple, it’s the specifics that are new and confusing to the average person. You make it make sense. I’m extremely glad I found this video and your channel, I love what you do!!!

@triniayman 2 года назад

LOL I love it, SI units are like the old school avengers! Love how you zipped by the animation for the mole too! lol

@triniayman 2 года назад

Great educational and entertaining video! Keep it up!

@user-ke6lg1bm1c 8 месяцев назад

that was educational and fun! you're so talented

@vuhan8277 Год назад

Very Nice presentation I like it.

@nicolasrodriguez1840 2 года назад

Great explanation and video!

@avrycfan69 3 года назад

This was exactly what I was looking for. Thanks!

@AntonioTheOptom 3 года назад

Glad you found it! 😂👍

@aymenbashir2387 2 года назад

WOW, awesome explanation

@paternyao 2 года назад

I like your presentation style 👍

@ogphoenix8965 2 года назад

WOW! Quite amazing

@AntonioTheOptom 2 года назад

Thank you!

@fdvdf5612 2 года назад

This helped a lot 👍

@AntonioTheOptom 2 года назад

Thank you!

@RichRXZ 2 года назад

Great video! How to understand the per m^2 part of cd/m^2?

@dsp4392 Год назад

You can think of cd/m² as how many "candles" there are on a surface of 1m×1m. This unit is often used to describe the luminous intensity of displays or large lighting panels. Unlike a candle, that is (theoretically at least) a point source of light, monitors and panels emit from a surface. You can multiply the cd/m² specification by the area of the surface to find out the total cd that surface emits. This will give you a measurement in cd. From there, the surface can be treated as if it was a point source itself. So for instance, if you had a 0.5m² TV rated at 500cd/m², it would emit a total of 250cd. Since TVs emit light on a 180° angle (no light behind), they cover 2π steradians, and so your TV would have a luminous flux of 250cd × 2πsr = 1571 lumens.