61–70 of 427 posts
Earlier quoted context omitted.
That’s great to hear and a big plus, but I’m actually curious about the undimmed full brightness refresh rate of the LEDs.
If it’s constant current the “refresh rate” is infinite, or zero depending how you look at it.
For someone who has no idea about light engineering or electronics if I stack two 25k Lm lamps next to each other does it make 50k Lm light? I recently changed my car's headlamps to Chinese LED which claims to be about 37kLm and I don't know how much it is probably less than that. Two of those lamps costee me around $24 on Amazon US (pretty sure under $10 in China). What makes this $800+ ?
It's possible, they exist, many such LEDs are probably manufactured in China ... but the legit ones are probably more expensive, and you may need a more recognizable brand to do some QA, and keep pressure on the factory to not slip quality or inputs.
Consider the cheap screwdriver included with the lamp in this story: unexpectedly, many were more faulty than the cheapest $4 screwdriver you'd find in any hardware store. The more stories you read about manufacturing stuff in China, the more you'll see very strange things. It's not about nationality or anything, it's an extreme kind of optimization. If you didn't catch it already, maybe you didn't really need what you thought you asked for ... they're just checking/optimizing
> As someone who generally stays out of politics, I didn’t know much about the incoming administration’s stance towards tariffs, though I don’t think anyone could have predicted such drastic hikes. I have an appreciation for very bright lamps, and the project is neat, but that stuck out to me. I'm always fascinated by people who both feel comfortable ignoring maybe the single most impactful society-determining appara…
I'm doubtful that knowing how much politics matters, but only in a vague way, would have been enough to help them. Could someone who was obsessed with following the Trump administration's every move have predicted the tariffs in advance? I don't think financial markets priced them in?
"Trump vows massive new tariffs if elected, risking global economic war"
https://www.washingtonpost.com/business/2023/08/22/trump-tra...
(https://archive.is/20231125045858/https://www.washingtonpost...)
EDIT - Found this after my post, a MUCH better "he said it":
https://www.donaldjtrump.com/agenda47/agenda47-president-tru...
> As someone who generally stays out of politics, I didn’t know much about the incoming administration’s stance towards tariffs, though I don’t think anyone could have predicted such drastic hikes. I have an appreciation for very bright lamps, and the project is neat, but that stuck out to me. I'm always fascinated by people who both feel comfortable ignoring maybe the single most impactful society-determining appara…
Earlier quoted context omitted.
I'm doubtful that knowing how much politics matters, but only in a vague way, would have been enough to help them. Could someone who was obsessed with following the Trump administration's every move have predicted the tariffs in advance? I don't think financial markets priced them in?
He literally said he was gonna: "Trump vows massive new tariffs if elected, risking global economic war" https://www.washingtonpost.com/business/2023/08/22/trump-tra... ( https://archive.is/20231125045858/https://www.washingtonpost... ) EDIT - Found this after my post, a MUCH better "he said it": https://www.donaldjtrump.com/agenda47/agenda47-president-tru...
“Living under a rock” is the technical term, I believe.
For someone who has no idea about light engineering or electronics if I stack two 25k Lm lamps next to each other does it make 50k Lm light? I recently changed my car's headlamps to Chinese LED which claims to be about 37kLm and I don't know how much it is probably less than that. Two of those lamps costee me around $24 on Amazon US (pretty sure under $10 in China). What makes this $800+ ?
Please don’t put in extra bright headlights on cars. Stock LED headlights being to bright for other drivers is already a massively common complaint — and then we have people installing even brighter ones? Please don’t.
50k lm is quite high. What electric power consumption does it have ? I estimate around 500 Watt, am I right ?
It's 60k lumens now, and it draws 580W off the wall
Impressive if so - every time I've designed something approaching that power level I've ended up needing forced air cooling.
Earlier quoted context omitted.
He literally said he was gonna: "Trump vows massive new tariffs if elected, risking global economic war" https://www.washingtonpost.com/business/2023/08/22/trump-tra... ( https://archive.is/20231125045858/https://www.washingtonpost... ) EDIT - Found this after my post, a MUCH better "he said it": https://www.donaldjtrump.com/agenda47/agenda47-president-tru...
And he did it last time too: https://en.wikipedia.org/wiki/Tariffs_in_the_first_Trump_adm... “Living under a rock” is the technical term, I believe.