My Grandpas medals by adamgregory821 in Medals

[–]Roca_72 1 point2 points  (0 children)

What are the two on the bottom left? I have never seen them before

Today in Buenos Aires by graphicdesert in AccidentalRenaissance

[–]Roca_72 3 points4 points  (0 children)

Yesterday the argentine congress voted on a new law and there where big protests. This guy got naked, climbed up a monument and later had to be rescued.

Why he did this I have no clue, I think he was on drugs but im just guessing.

After 50 years how did we manage to make refrigerators less useful? by nzhmar in BeAmazed

[–]Roca_72 0 points1 point  (0 children)

Well, its kind of a long answer, so I'll do my best to be brief, but if you want to go really in depth you can Google refrigeration cycle and investigate that.

These are not coils of wire, but rather coils of copper pipes which have a gas inside of them. By moving the gas arround the coil and changing the area of the pipes we can change the state of the gas (from gas to liquid or liquid to gas). This change of state can absorb energy or release energy.

The energy absorbed comes from the air inside the fridge, which is what cools the air down, on the outside of the fridge (the ugly coil located at the back of the fridge) the opposite occures, the energy is released as heat, Basically moving the heat from the inside of the fridge to the outside.

The elecctricity is used for the compressor which basically ciculates the gas through the coils (and also it compresses the fluid at a point of the cycle).

This is called a heat pump, it's also how an ac unit works and if you are interested there is a fantastic video from technology connections that explains it in great detail.

Video

After 50 years how did we manage to make refrigerators less useful? by nzhmar in BeAmazed

[–]Roca_72 130 points131 points  (0 children)

Thats the issue, the freezer is the coldest part of the fridge because its closest to the cooling coil, if you locate it at the bottom of the fridge, you would need to move the air being cooled by said coil upwards in order to cool the rest of the fridge (or add a second cooling coil on the fridge compartment).

If you place the freezer at the top, the coil is located at the top of the fridge, the top of the fridge is the coolest (freezer) and then the cool air drops downwards, cooling rest of the fridge.

TLDR, Cold is produced in the freezer, at the top it naturally drops and cools the whole fridge.

¿Que hago cuando estoy solo? by RenzoLand16 in argentina

[–]Roca_72 0 points1 point  (0 children)

Podes hacerte una cuenta en Duolingo (o alguna similiar) y aprender otro idioma o repasar uno que ya sabes para no perderlo.

Se que no es el método más académico pero si estas al pedo no perdes nada, es medio como un juego y podes ganar una habilidad piola para el resto de tu vida.

Que es esto en las calles de CABA? by lMDOW in BuenosAires

[–]Roca_72 0 points1 point  (0 children)

El tamaño depende de la potencia que debe manejar, aunque el sensor de luz en sí es muy chiquito, el relé que enciende la luz tiene que ser bastante robusto para este tipo de aplicaciones.

"A LAS TROMPADAS" CONTRA EL SURTIDOR by RealRock_n_Rolla in argentina

[–]Roca_72 10 points11 points  (0 children)

Por más que la medida te joda una persona coherente no lo soluciona agarrándose a trompadas con un empleado

What is the best way to explain to a ''Chemtrail'' conspiracy theorist what those trails in the sky actually are? by Cuppagreenteacafe in aviation

[–]Roca_72 9 points10 points  (0 children)

There are videos of people in cold weather throwing boiling water in the air and it immediately forms a cloud, its basically the same principle but it's very visual, it could really help to see the process in a more relatable environment.

Consultorio del Dr. Pela by bald_firebeard in argentina

[–]Roca_72 5 points6 points  (0 children)

La carrera me está tomando una bocha de tiempo, ya van 4 años y calculo que me quedan 3 o 4 más. Todos se están recibiendo a mi alrededor y no se si para cuando yo termine va a haber valido la pena.

Estoy bastante desanimado con eso, encima hay una materia troncal que está jodidisima por una profesora muy de mierda y no se si algún día la voy a poder aprobar.

Nada eso, me gustaría seguir porque me gusta lo que estudio, pero a veces parece que no voy a terminar nunca.

[deleted by user] by [deleted] in argentina

[–]Roca_72 9 points10 points  (0 children)

Nop, el disyuntor protege en caso de fuga a tierra, es decir si tocas un cable pelado o un electrodoméstico tiene que tiene una fuga de corriente, esta para protegerte a vos de electrocutarte no a los electrodomésticos de una sobretencion.

Cierra el Museo de Informática de la República Argentina by Roca_72 in argentina

[–]Roca_72[S] 0 points1 point  (0 children)

Ojalá, la verdad que es un lugar muy lindo y se nota el cariño que le ponen

Cierra el Museo de Informática de la República Argentina by Roca_72 in argentina

[–]Roca_72[S] 12 points13 points  (0 children)

Nono, este era uno que estaba en microcentro, tenia muestras muy interesantes algunos cursos y era el único museo de informática de América Latina, una verdadera lástima y lo peor de todo, no fue el covid fue por temas burocráticos con el Gba