What have you learned today?

[Gordon_4]

Some bs (bulb shit) -




@TubelabCom 6 days ago
I have dissected several dead LED bulbs to see what died. It is rarely the LED's themselves. There is an electronic circuit inside that regulates the amount of current flowing through the LED's. It uses several components, but there will be one or two "electrolytic capacitors." Good quality capacitors have lifetime vs operating temperature specs, and often the temperature for the specified lifetime is included on the outer heat shrink label. The common numbers are 85C and 105C. I have never seen a temp rating on the capacitors used inside an LED bulb, probably because they are poor quality. Every dead bulb that I opened had a dead capacitor, often dead enough to be leaking its electrolytic paste. Bulbs that are mounted upside down are worse case as the heat from the LED's rises to cook the circuit board. LED's do generate a little heat. The bulb here on my desk had 24 small LED's mounted on a thin circuit board that was attached to an aluminum heat spreader. It lived for almost 8 years in a ceiling can upside down before dying of dead capacitor syndrome.

Soooo, Penny pinching/planned obsolescence strikes again?

 

[hanselthecaretaker2]

Color me curious -

A Test Told Me I’m Basically Made of Plastic. You Probably Are Too

BPA and phthalates are everywhere. A new test can reveal how much of both are in your body.

time.com

I’ve been drinking a tall Core water every weekday for the past few years and I’m wondering what my levels are. Really considering cutting back and/or changing some habits regarding plastic usage. Already cut out reheating stuff in plastic Tupperware. Will probably switch to filtered tap water in a stainless steel tumbler in the meantime.

 

[Johnny Novgorod]

Rhinos can grow their horns back but elephants can't grow their tusks back.

 

[Kyrian007]

Some bs (bulb shit) -




@TubelabCom 6 days ago
I have dissected several dead LED bulbs to see what died. It is rarely the LED's themselves. There is an electronic circuit inside that regulates the amount of current flowing through the LED's. It uses several components, but there will be one or two "electrolytic capacitors." Good quality capacitors have lifetime vs operating temperature specs, and often the temperature for the specified lifetime is included on the outer heat shrink label. The common numbers are 85C and 105C. I have never seen a temp rating on the capacitors used inside an LED bulb, probably because they are poor quality. Every dead bulb that I opened had a dead capacitor, often dead enough to be leaking its electrolytic paste. Bulbs that are mounted upside down are worse case as the heat from the LED's rises to cook the circuit board. LED's do generate a little heat. The bulb here on my desk had 24 small LED's mounted on a thin circuit board that was attached to an aluminum heat spreader. It lived for almost 8 years in a ceiling can upside down before dying of dead capacitor syndrome.

I'm very lucky I switched over to LED's when I did. While they were still building them to last. I replaced all the bulbs in the house I used to live in, about 15 years ago. I've never had one burn out. When I moved out, I took them all with me. They all still work, and I still have the spares as my apartment needs many fewer bulbs than my house did. I haven't bought a light bulb in over a decade.

 

[gorfias]

Sorry if this already posted. Pretty cool.

How much did a game make?

Steam Revenue Calculator

Discover how much revenue video games make on Steam.

steam-revenue-calculator.com

 

[Thaluikhain]

You know in old cartoons where someone would pull a lever and stairs would turn into a slide, usually with some unlucky person halfway up?

In the 1960s the US Navy put those on aircraft carriers, so they could get cargo downstairs faster.

 

[hanselthecaretaker2]

Never thought about it quite that way.

 

[hanselthecaretaker2]

Math hack -

x.com

x.com

 

[hanselthecaretaker2]

Creepy cool -

 

[Bedinsis]

 

[Chimpzy]

Marines outwitted an AI security camera by hiding in a cardboard box and pretending to be trees

When tasked with defeating an AI programmed to detect human movement, a squad of Marines got creative.

taskandpurpose.com

We're all thinking this

 

[Gordon_4]

Marines outwitted an AI security camera by hiding in a cardboard box and pretending to be trees

When tasked with defeating an AI programmed to detect human movement, a squad of Marines got creative.

taskandpurpose.com

We're all thinking this

Isn't that story like, ten years old now?

 

[Chimpzy]

Isn't that story like, ten years old now?

Could be, first I've heard of it.

 

[Thaluikhain]

Isn't that story like, ten years old now?

" In Paul Scharre’s new book Four Battlegrounds: Power in the Age of Artificial Intelligence, Scharre recounts the story of one AI experiment that was disrupted by a squad of Marines who innovated new ways to sneak around and avoid detection "

So, might be an old story coming to light again in a new book.

 

[hanselthecaretaker2]

Well it seems simple enough I guess.

 

[Worgen]

More about vaccines.

 

[hanselthecaretaker2]

Well maybe not everything but -

 

[Gordon_4]

That Shaun Scott, probably famous at all for playing DS/DI John Deakin in "The Bill" was also in "Moon Knight".

 

[hanselthecaretaker2]

Oh rats -

 

[Gordon_4]

Oh rats -

Rats are both exceptionally good swimmers and physically capable of squeezing into places. It should not come as a shock that they can swim up your S-bend.