You're quite welcome; I'm happy to remove the distraction

I've been wanting to make this for a long time, too.

Good! I'm happy to have removed the distraction, so you can focus on the physical chemistry

That's exactly why I paused the Introduction video and looked for this one! 😅 Now I can concentrate on the lectures!

I'm glad you did well on the exam... and even more glad that you've learned some PChem!

Thanks. Although ideally, it should not look like a trick or illusion -- it should be invisible and let students concentrate on learning the topics being presented

My handwriting is bad enough when writing forwards. You don't want to see it when I try to write backwards.

Thanks!

You bet!

I have more videos in the works, but there won't be too many on spectroscopy.

its just called lateral mirroring

thanks

That is the plan

Don't worry, there will be more

That's right

Sorry, I wasn't the one who built it. Maybe Dallas (who has a cameo in this video) will see this comment and chime in. I know he upgraded a few times trying to get the lights brighter. Unfortunately, I haven't found a brand of markers that I'm happy with. I can go through a marker in just two or three of my 10-minute videos. If you have watched very many of the videos on this channel, you'll unfortunately have seem plenty of examples of washed-out markers. That's a big reason why the LEDs need to be as bright as possible.

I got some details from the guy that built the lightboard. He used tempered glass, not acrylic. It's important that the glass be very clear and not reflect any light internally. The LEDs came from a company called Waveform Lighting, as did all of the connectors and power adaptors. store.waveformlighting.com/products/filmgrade-led-strip-lights-for-film-photography

The frame is just barely out of the shot most of the time, so it's about 8 feet wide and maybe 4 feet tall. You could easily work with other sizes and adjust camera placement accordingly

@@PhysicalChemistry thanks

That's also done with software during processing. There's nothing projected on the glass. There's a computer monitor in front of me, next to the camera, showing what the camera is seeing. The PowerPoint slides are superimposed on that image. If you watch carefully, you'll see that I sometimes have a hard time pointing to something in a PowerPoint image very precisely. That's because I can't see it on the glass near my finger, but have to look at my image on the monitor and adjust from there.