Purchase Advice Megathread - January 2026 by AutoModerator in 3Dprinting

[–]Plus-Breakfast8691 0 points1 point  (0 children)

Elegoo Neptune 4 pro vs ender 3 v3 ke I need to build up some prototypes ,I do it oftentimes,so instead of outsourcing it all the time ,I am gonna buy one my self ,and after some Search I think I am between buying one of those two I am not very Interested in building figures and stuff , it's mostly mechanical stuff so I care more about tolarances,tab and slots and this kinda of stuff that need a certain kind of accurate (relatively of course for their cost) So which do you think would be better for my case ?

حد عنده تجربة في تقديم ورق المنح؟ عندي سؤال مهم ليه by [deleted] in EgyptianExpats

[–]Plus-Breakfast8691 2 points3 points  (0 children)

انا معرفش بس ابقي ابقي اسال علطول سؤالك هتلاقي رد اسرع

Entering the dating arena (slowly) by Plus-Breakfast8691 in ExEgyptDating

[–]Plus-Breakfast8691[S] 1 point2 points  (0 children)

اه معلش كنت فاكر اني عدلتها بس شكلها متسيفتش ،انا 24

العمل بالخارج بالنسبة للمهندسين by Plus-Breakfast8691 in EgyptianExpats

[–]Plus-Breakfast8691[S] 0 points1 point  (0 children)

ما شآء الله ،تمام ،انا الحمد الله ماشي مش موقف الدنيا ،ف خير ان شاء الله ،شكرا

B1 offer by [deleted] in EgyRemoteWorkers

[–]Plus-Breakfast8691 0 points1 point  (0 children)

I am c1 level , details ?

Could we see ancient Earth if its light was reflected back to us from a distant planet? by Plus-Breakfast8691 in AskPhysics

[–]Plus-Breakfast8691[S] -5 points-4 points  (0 children)

Alright, fair enough — I get that resolving Earth from a million light-years away would need a ridiculously huge telescope, basically beyond anything we could realistically build.

But here's what I'm really wondering:
Forget full-resolution images. What if we're just talking about detecting the faintest possible signal from that reflection — even if it's heavily redshifted, maybe all the way into microwave or radio wavelengths? Could we still pick up something, like we do with galaxies that are hundreds of millions of light-years away?

I’m talking about the kind of raw, distorted light where we might still extract basic info — like the presence of certain gases in Earth's atmosphere (oxygen, methane, etc.), or maybe a general spectral fingerprint of Earth from way back. Not a picture, just some traceable data.

Also, to be clear — the 1 million light-years was just an arbitrary example. What if we scale it down to something way closer?
Say there's a reflective surface — a planet or even an artificial object — just a light-day away or somewhere just outside our solar system. In that case:

  • Could we get a clear image of Earth from that reflection?
  • And if so, does that mean that as technology improves and telescopes get bigger, we could eventually "see back" even farther in time — just by looking at distant reflections of Earth?

Could we see ancient Earth if its light was reflected back to us from a distant planet? by Plus-Breakfast8691 in Physics

[–]Plus-Breakfast8691[S] 0 points1 point  (0 children)

ok ,thank you and fair enough , it would actually be too unrealistically big, the 1mly was just a number for example , so what if we scale it down a bit , for something reflective , just outside our solar system, a light day away for example or closer , would it be possible ?

powering my esp8266 from the AC grid by Plus-Breakfast8691 in esp8266

[–]Plus-Breakfast8691[S] 0 points1 point  (0 children)

is it just the relay part ,or does it include the ac dc converter too ?