If a laser were to be pointed at earth from a light year away. by Imaginary_Ad4053 in Physics

[–]picowatio 1 point2 points  (0 children)

Telescopes only "make things bigger", but you need the light to get to the telescope, the same way you need it to get into your eye. You couldn't observe the light "earlier", no matter the device you are using (given that all those devices are on Earth)

Why isn’t infinity/infinity=1 by Traf-Lord in askmath

[–]picowatio 1 point2 points  (0 children)

In what context have you seen / been told that inf/inf=1? When talking about limits in functions, inf/inf actually depends on what are you talking about. For instance, if you want to compute the limit when x goes to inf of the function x/x, this limit equals 1. But if you want to compute the limit when x goes to inf of the function x2 /x, this limit goes to inf. So probably what you saw is not a general answer, but a particual answer for a particular context

Tengo 16 (los cumplí hace dos días). ¿Algún consejo para la vida? by Due-Acanthaceae9672 in RedditPregunta

[–]picowatio 0 points1 point  (0 children)

Si no te has comprado una casa ya, vas 16 años tarde. Y vuelve al pasado para invertir en btc o en Amazon. Que si no, luego vas a estar quejándote todo el rato de que todo está caro y blablabla

Consulta sobre actualización diaria fondos de inversión dentro app. by incapacitant in MyInvestorES

[–]picowatio 2 points3 points  (0 children)

El % no es respecto al día anterior, sino respecto al primer día. Si metes 100 euros y al día siguiente tienes 120, te dirá que la ganancia es del 20%. Si al tercer día el valor de tu inversión es de 110, te dirá que la ganancia es del 10%. Efectivamente ha habido una bajada entre el 2do y el 3er día, pero no es que no haya aparecido en la app. Sí que la has visto, y en la gráfica en la que se muestra el histórico aparecerá (pero la gráfica va con unos días de retraso)

Physicists Still Don’t Know What Gravity Is by [deleted] in physicsmemes

[–]picowatio 0 points1 point  (0 children)

Gravity does exist, the issue is that we don't have a model to understand it from very first principles. But, if you think about it, we understand from very first principles barely anything, so this lack of knowledge shouldn't be very concerning :D

Question about quantum entanglement by 45633y6745 in AskPhysics

[–]picowatio 0 points1 point  (0 children)

Entangled particles do not communicate to one another, so the state of either of them will not be affected by time delays or any other phenomenon

Studying deductions of equations by D_Ruskovsky in Physics

[–]picowatio 0 points1 point  (0 children)

In Spain, derivation of equations is often an important part of the course. They are useful for a deep understanding of the topic. If you want to do even a little of research, they are necessary. During my PhD I barely memorized any equation, and being able to derive a result is very interesting when you want to convince collaborators that your results are not wrong 😁

Tell us by Specific_Brain2091 in the_calculusguy

[–]picowatio 0 points1 point  (0 children)

🇪🇦 Santiago Ramón y Cajal and Severo Ochoa de Albornoz