1

Physics, Astronomy & Cosmology / Re: Is there a net heat exchange between water and ice at 0 degree C?

« on: 20/03/2022 01:21:44 »

Hi all,
 Hamdani you raise a interesting scenario,

BC

Energy will flow until equilibrium is achieved.

It was already at equilibrium.

I am not sure that statement is totally correct, if you consider the energy imbalance between the two sides as described,
for example the latent heat/energy is unbalanced as is the kinetic energy of the molecules, also the density's.   

2

Geology, Palaeontology & Archaeology / Re: Is the earth really flat?

« on: 28/07/2021 13:53:47 »

Hi all

As regards spirit-levels, in the past they were simple devices.  Just a glass tube filled with greenish liquid, and on the surface of the liquid, an air-bubble.

This bubble could be observed against black-lines etched, or painted, on the glass tube. Thus enabling levelness to be established simply, and optically.  By just looking at it.  Without any electrical input from batteries.

Has this changed in modern times - are "spirit-levels" now electronic devices, which have to be fitted with batteries?

Is that progress?

I think you are right simple is the best way with one exception to getting a level over a large distance optics or electronics are beneficial.

Oh dear I think my comment fell on stoney ground.

So to be a little less abstract, I was referring to a traditional spirit level, if you find where the battery goes please share here as I’m sure each manufacturers different 🤣

3

Physics, Astronomy & Cosmology / Re: Problems with PopSci articles in GR. Should we stop using one example?

« on: 20/05/2021 19:19:25 »

Hi all,
Yes thanks for that Colin, I totally agree, your actually, stating something that was also said in a previous post:
(Energy is the currency of the physical world)
😎

In regards to ES having a problem with the use of a ‘thought experiment/ analogy’ of the Sun disappearance, I believe there are lots of examples of these used through out mans development of theories, and Einstein/Newton are documented to having resorted to using them, to great benefit.

4

Physics, Astronomy & Cosmology / Re: How to calculate the orbital speed of the ISS around the centre of the earth?

« on: 03/05/2021 16:27:40 »

Hi Phil
The equation and relevant information you require to calculate it is in the link provided

https://www.physicsclassroom.com/class/circles/Lesson-4/Mathematics-of-Satellite-Motion
🤔

5

General Science / Re: Buy Spam Online for Sale USA

« on: 07/04/2021 23:47:06 »

Hi all

boppity boppity time.

Is that a medical term?

Great stuff this spam. So, do you eat it or just smear it all over??

I believe the culinary experts would recommend it as an aid for battering 
just before you deep fat fry it

Spam fritters for everybody.
wonder if they do a mars bar version ?

6

Geology, Palaeontology & Archaeology / Re: Is the earth really flat?

« on: 21/03/2021 23:20:15 »

Hi all

I am Not a FlatEarther, & i do Not support such delusionally hallucinating theories...But do remember, even a Dead Clock is Right once a day.
⏰

Twice, I believe,

In regards to the original post, consider when was the last time you replaced the battery's for your spirit level.

7

General Science / Re: SPAM TUB SPECIAL - The Washing Machine SPAM Service Center

« on: 17/03/2021 23:42:27 »

So my washing machine caught fire today
The good news is I was able to get my washing and drying done all in one go.