How this Lightboard Works 

The Phenomonology of Lightboards

🤣🤣🤣 I'm glad you made this. Maybe I'll link this video to all of the people who are amazed by how you're seemingly writing backwards. Illinois Energy Professor (Dr. Ruzic), and many lectures from MIT/Standford opencourseware (to name just a couple) use these lightboards too.

I first noticed this when I was 5 minutes into the first video of yours that I watched. I ceased paying attention for the next 5 minutes as I imagined the technique you described. Something then told me I was wrong and that you actually had developed super-human talent. I'm glad you cleared that up for me. I'm enjoying the channel and your videos, thanks for sharing!

It's a great setup. The concept is so simple but I find it much easier to follow than other formats, like slides, or digital writing.

I feel dumb for not catching on, But this was probably the least click bait-y way to retain so much attention. I applaud the simplicity.

Sir. You are a wonderful person. Your lectures on Austin and Harts theory made me to follow you. I really enjoy your lectures.

I was just watching a lecture and my brain was breaking because of the way the professor was so naturally writing in "my" perspective on what appeared to be a pane of glass in front of him. After the explanation, it makes a lot of sense, but my brain was so broken by it (or maybe my brain was broken from watching lectures about cost accounting), I was having trouble fully grasping what was going on. This video helped. 😂 Thank you

I was watching your video on Austin and I really wanted to know how you write backwards, thanks for the lectures and for this video extinguishing my curiosity :D

Thanks a lot for this and all the other videos. While you do an amazing job to present the material professionally and in an entertaining way, I really admire, how matter-of-fact you present these controversal topics, and make it clear, you present the material, not your opinion. This helps a lot to just learn from it (even as I only watch this for fun ;)). Great job and thanks a lot!

I figured out how this works pretty quickly, I'm just amazed the sound is so good! Thanks for posting all the lecture videos; I've been learning a lot.

You should have just said yeah, I am writing backwards. Pure skill.

That is awesome, thanks for sharing your setup!

Nice video. Should have millions of views already, what the heck!

I think using a mirror + tilt shift lens would make the lightboard effect even better than a normal lens + glass. With a mirror, your body would appear in front of the text, instead of behind, and then the tilt shift lens would hide the camera, and make it seem like you're facing directly in front of one. Best of both worlds.

This is really cool and highly effective.

Tell Adam to flip your image too, not just the text. Why should you be laterally inverted? 😀 By the way, thank you very much for your brilliant tutelage. I have subscribed to your channel and I've watched almost all of your videos here.

haha, thanks for explaining, funny i didn't think of the flipping :D

I figured something like this is what you did, but I was curious to know the details. I'd like to try to build one of these.

So cool!

I so wanted to know!!!!!!

Thanks!

Cool!

That the image was flipped I found out long ago. It was clear that you wrote on glass. But also writing backwards? Nah! That would be something. So I started looking for clues. And I found one very easy, quite fast. Your jacket! You wear a normal man's jacket. But the buttons (and therefor als the button holes) are positioned as a female jacket. Instead of buttons right, button holes left, it was just the other way around, like a female jacket. But female jackets have a different cut. So, conclusion, the image got flipped. But, yes, it's great fun to see someone writting backwards with that speed.

Awesome

Thanks for making this video. My first thought was you were standing in front of a pane of glass in front of a mirror. I couldn’t figure out the camera placement, though.

Thanks for leading me here...

The left hand is the give away. But certainly ingenious. As we try and be accurate in our words on this channel we should be clear that the mirror does not flip the image. The observer (the camera) is reversed.

Called it.

It’s as if we viewers are imprisoned inside a dark cave and all we see are reflections of Forms as your light board illuminates them.

So cool

cool

Thanks so much for this video, I really wanted to know this but didn't want to ask in the comments of a video about the morality of spending money on luxuries instead of saving lives... :D

yes! i asked this myself instantly -but your notes sometimes seems to appear behind you when a hand or arm is in the way..- (well, not really true after rewatching the video that i first saw) guess i thought a software would trace the pen (maybe is the board was tactile..) and then put everything to the back

Hi. What are the dimensions of the glass?

Where would you go to buy one?

I am disappointed that our science is so primitive that it can't flip just the text, and not you. BTW your lectures are fantastic.

🤯

did anyone else want to see him try to write backwards as well as see the original unfllipped image？

Ahhhh my question has been answered! There must be a philosophical equivalent to this cognitive dissonance I experience when viewing Jeffrey's brilliant lectures

Does that mean you need to swap what hand the ring is on?

1:59 💀

Cool, a real quality thing. Thank you for helping out of Ryle's radically empirical universe. Please don't bother yourself, didn't you just gave ontological proof that Descartes' mind body dualism, the cartesian coordinate system and, or god exists? -- No, it's you, Dave and the camera; mais bien sur!

Thank you so much, I was about to loose my interest in life because of this mysterious glass.

So it's not a myth that this is a safer teaching technique than waterboarding

🔥🔥🔥🔥🔥🔥😅💀😂🥰😍

So this means you're right handed.

Thank you. Kinda sorry you are not a genius writing backwards. It was charming to know Jefffrey di Lodovicio Buonarroti Kaplan if only for a few days.

You forgot to mention that the buttons on your shirt are on the wrong side for a man's shirt. Yeah, I kind of figured it all out earlier.

Can you please move your wedding ring to your right hand and then delete this video? Go on, do it, it’ll be fun!

I find lightboard videos colossally distracting because of the backward writing effect. Maybe I'm the only one but, thanks I hate it.

Thought you were just a genius, not to say that still isn't true😅