Heat is the cemetery of energy and is the result of the dissipation of other (higher) forms of energy.
Heat is the cemetery of energy and is the result of the dissipation of other (higher) forms of energy.
Well, if you are willing to coat your head with copper and some tin on top, you can grow yourself some tin whiskers. Yet, I don’t know if they make a good replacement for hair.
Deep in the coating, where the Cu6Sn5 [Remark: intermetallic phase of Sn coating and Cu substrate] is present, the deviatoric strain was high. This indicates that the growth of the intermetallic phase causes plastic deformation of the tin coating.
[…]
A short (4 micrometre) radial gradient in hydrostatic stress was observed around the root of the whisker. This gradient together with long-range diffusion from specific regions could provide the driving force for whisker growth.
https://portal.research.lu.se/en/publications/tin-whiskers-experiments-and-modelling
A colleague of me did his PhD exactly on the last topic.
Same for Eternity. I think it’s for use with a normal browser.
Probably verification by the associated domain. At least this works on Mastodon and Friendica.
https://stefanbohacek.com/blog/verification-in-the-fediverse/
From the energy perspective, you need a certain amount to increase the temperature of the snow form initial temperature to over 0°C, and another amount to overcome the latent heat (heat of transformation) from solid ice to liquid water.
The latter, the heat of transformation from solid to liquid, is quite large and has been used for making ice cream whitout a refrigerator: Melting ice cubes in a large bowl with the help of salt was used as a cooling agent to freeze the ingedients contained in a smaller bowl placed inside the larger one.
There is no force without interaction, just linear momentum.
Essentially, almost nobody ever used it, not even all offices and authorities.
I think every government should be providing email service the same way they provide physical mail service. With all the rights currently given to physical mail.
We’ve tried that in Germany. The De-Mail was already dead when it was born.
They already are:
https://bsky.app/profile/rustfoundation.org
When Firefox announced they were on Bluesky, the comments here were the opposite: Why another corpo walled garden and not the real Fediverse?
I haven’t found the announcement itself, but replies by Tumblr mentioning it.
The Great Pyramid in Giza, as it is really old?
The comic lists tall structures existing in this moment. Aside from not starting at ground level, as an experiment, the space tether does not persist until today.
Usually, you notice it, as Mastodon automatically adds an @username@instance for everybody the commment replies to, Lemmy doesn’t.
As I’ve understood, Delta chat is based on the IMAP protocol and uses the infrastructure of your email provider. Thus, it uses no own server infrastructure, but has the also the downsides of the protocol and some issues with many email providers.
Wikipedia.de - Delta Chat (no English version available yet)
Both orientations work in Barcode Scanner (Atharok) and QR and Barcode Scanner (wewewe718), but don’t work neither with Binary Eye (markusfisch) nor with SecUSo QR Scanner.
AfaIk, you will be following some accounts in your field of interest by default, so that your timeline isn’t empty at the start.
The core of the question is: What defines the temperature of the capsule?
While it’s intuitively clear that the astronauts (~3×100 W) and electric devices (if they are running) generate heat in the interior of the capsule, on the outside it’s more complicated:
The first thing that comes in mind is the sun shining onto the capsule (even throug a sphere defined by the solar orbit of the earth with the enormous power of 1361 W/m^2 ) heating up its surface. Yet, as the surface of the capsule is made of shiny aluminium, only 20 % of the radiation is absorbed, the rest is reflected. Additionally, the radiation effectively acts only on an area defined by the cross section of the capsule, not the entire (semi-spheric) part of the surface directed towards the sun. But anyways, the surface subjected to the solar radiation heats up and…
… itself emits heat radiation into space with a power proportional to the 4th power of its absolute temperature (~ T ^4 ). The remaining heat from that source is conducted along the hull of the capsule and towards its inside until an equilibrium temperature distribution is reached, where the heat generated by the astronauts (and devices), the heat intake from the sun, and the negative contribution due to heat radiation on the entire surface are in an equilibrium state.
The NASA engineers surely have designed the properties of the capsule in that manner, that a comfortable ambient temperature inside the capsule is preserved when all electric devices are running as planned (i.e. the comfortable temperature is the equilibrium temperature in that case).
As in the emergency situation, these devices were turned off, the equilibrium temperature which adjusts by itself is significantly lower than the designed comfortable temperature.