studiot

It is off topic.

Are you sure that is what you were actually told ? Was your source actually saying that the speed of light is invariant ? I said that the speed of light was measured at 300,000,000 m/s. But you could change the units so that it is exactly 1. You would of course not be measuring distance in metres and time in seconds. Please note there is an important difference between absolute, constant, and invariant. Do you know what this is ?

Are these installations because there is no available generator and how do they compare with a wind turbine ?

I am not sure, reading through this, whether Mitko means that there is a separate magnetic field due to the wire whether there is a current or not OR that he means that the when there is a current in the wire the this generates amagentic field which is one of the two fields he says interacts It seems to me there are two obvious questions that the OP needs to answer to clarify this What force is there if there is a wire but no current + the external field ? What force is there is there is a current but no wire + an external field ?

Well a long time ago the largest, (most massive) body that started drawing smaller material towards itself to form the proto-earth had a much smaller gravitational field. As first the pieces coalesced there must have been a period of rapid increase in gravity. This is the most likely mechanism for the emergence of a planet sized object, scooping into itself smaller chunks of matter local to itself and thus growing at the expense of other matter in its immediate vicinity. Further material would accumulate from (smaller) passing meteorites, comets etc. Eventually the locality would be swepts largely clean and a sort of equilibrium would be established where the planet's gravity did not change much over time. Changes would now occur due to the decreasingly frequent capture of passing meteoric material and the loss of mass due to nuclear decay of the planet's own material. This is the stage we are in today. One difficulty with the Tsunami theory is that (at least) the Bible claims a prolonged deluge that preceeded the flood. A Tsunami does not offer an explanation for this - prolonged rain can happen after a Tsunami, rather than before. Note this does not rule it out, just highlight something that needs further explanation.

Tippe Tops are made as toys, there is plenty on google about them, here is a youtube video. But remember it is not generally eccepted that this happened. Given that we do not fully understand the Earths core dynamo, it has been suggested that flipping just the core causes the magnetic reversals. But remember there is much we do not know and there is not enough evidence to confirm either proposal. What did you think of the Christian website modern interpretation ?

Just because you would like it to be true doesn't validate this statement. In fact quite the reverse situation is true. The peak of scientific effort being directed towards revealing details of a 'designer' occurred between 100 and 300 years ago and has been declining ever since. Today it is probably at an all time low point. Hello Mender, I see the relevence of your "nom de forum". Nice. I'm sorry that this thread has been allowed to wander far and wide off the stated topic which is a valid question on a scientific forum concerning what we know about geological history. Indeed I admit to veering off myself when you introduced the proposal of intelligent design. Sadly you chose to challenge my additional comment suggesting we leave discussion about belief systems rather than answer my point as I asked when you responded. So my point and question as noted in my first quote still stands unanswered by your response quoted below. So let us return to your original question aboud Noah's Flood. Firstly you might be more comfortable with this explanation that arguing with 'aethists (which I am not) or about intelligent design. Here is a link and the beginning of the article You also seem prepared to listen so here is an interesting unconventional but scientific explanation of the 'Flood'. It is a known (in modern times) fact of mechanics that a spinning top has two stable positions and can flip between them, so that the spin axis reverses itself. There is a proposal that at some time past this happend to the Earth so that the North and South poles of the mechanical spin axis interchanged. (Please note this is not the magnetic pole reversals which are quite a different phenomenon) Peter Warlow wrote a book about it called The Reversing Earth, which suggests this sudden flip caused whateve water there was to slosh around the globe like a giant tidal wave. Note again it is not generally accepted that it did happen, but it is accepted that it could happen within current scientific knowledge.

If things are really as bad as painted, it's funny how many Mexicans want to get into the US, and that number is rising again.

https://www.bbc.co.uk/news/education-56462390 For those who might be vulnerable.

Didn't I already say this, there are so many covid threads now. Incidentally the UK figure is pushing 2000 per million, double that of the US.

https://en.wikipedia.org/wiki/Matchbox_(brand) ??

Apropos of nothing in particular we have an old saying "A stitch in time is worth nine." How scientific is this numerical evaluation of time ? 🙂

Thank you for the reply. The test you refer to didn't mention the environmental conditions and I couldn't see any snow in the picture but I assume the ambient temp was below 70oF. One thing about an IC engine is that it heats the engine gompartment and fabric of the vehicle as well. In countries like the UK internal condensation and corrosion is a problem in vehicles parked outside. This requires heat as well as ventilation to combat.

Shows just how quickly the science is moving on this issue. The linked report is only 2 days old but completely out of date and superceeded by last night's statement from the EU health agency and subsequent action reinstating the vaccination program by the various member states. Today on the BBC, Professor Openshaw of Imperial College said that even the two days hiatus (thanks Markus for the word) will lead to more deaths from covid than would be saved as a result of avoiding any threat from vaccination.

I think this was a genuine mistake or misreading so I am going to say +1 to cancel the -1. Perhaps the "impenetrable clouds of philosophical fog . .. ." are obscuring my vision but I like to give the benefit of the doubt.

Our experience is the same for carrots. Even commercially produced carrots seem to loose texture and flavour, though I am not sure that variety doesn't play a part in the lack of flavour. Wahsing is not part of blanching. That is simply immersing in boiling water or a steam blast and draining/drying. My aunt used to have a centrifugal (handraulic) spinner for the draining/drying part.. Washing is recommended, particularly with shop bought carrots since they scrub them in some chemical which kills germs but blackens the carrots within a few days if left in the air. We find that home freezing cannot sustain the range of freezing techniques and products available to commercial growers, who dip things in liquid nitrogen for example. So we use our freezer differently. Sometimes we just want to suspend deterioration for a few days to a week so leftovers go straight into the freezer for this time and this works just fine so that we don't have to eat the same things several days on the trot. Also we try to store stuff that freezes well (or is prefrozen) or cheap at certain times or unavailable at certain times eg Christmas mince pies. I see no point freezing potatoes or cabbage. They store pretty well in the garden are generally available all year round and take up a lot of space.

Yes I agree, good point. +1 There is a lot of wooly thinking in this thread because we actually need to admit that we really don't know the answers here. But we should also state that Science is still investigating and has no definitive opinion as yet.

Perhaps so, but that does not invalidate my point. I expect there will always be a residual few who wish to cling to unsupported belief systems. Please answer my point directly. Particularly as you say you wish to discuss , and that is the purpose of this webforum. The perhaps we can address some of your other claims, particularly those highly selective ones about the contents of the Bible.

Well I am disputing that you can actually press down on your scales with a force greater than your own weight, without pushing against another (relatively immovable) object. So try it next time you visit a clinic or ask a neighbour. When you jump or rise slowly you are configuring your body as a see-saw or medieval catapault so that you can get necessary leverage to multiply the force on one side of the fulcrum. Note again that the reading on my bathroom scale drops when I stand on tiptoe. The value of this drop depends how fast or gently I stand up. So if I stand gently on the scale and wait till the dial settles at 70kg, then stand up very quickly it drops very rapidly to about 18 kg then returns to 70kg. The faster I stand the greater the drop. If I stand very slowly and gently the scale barely flickers below 70kg. At no time does it exceed 70kg. - the static value. It really needs a video, I will try to obtain one and get help to post it here. I don't think still photography will work here. But you really should conduct the experiment for yourself and see what happens.

Just because you would like it to be true doesn't validate this statement. In fact quite the reverse situation is true. The peak of scientific effort being directed towards revealing details of a 'designer' occurred between 100 and 300 years ago and has been declining ever since. Today it is probably at an all time low point.

We have a thread on comparing electric to heat engine powered vehicles, but this and a recent discussion elsewhere inspired me to consider passenger cabin heating in electric vehicles. IC engines have the advantage of a readily available heat source. Does anyone have any data or experience of how an electric car is heated and how much energy this takes ?

Have you ever tried this ? Would you like me to post some photographs of what happens when I stand on my domestic bathroom scales and press up to stand on tiptoe ? The reading is rapidly disturbed by many kilogrammes. Downwards (towards much lower reading) Then the scale spins more slowly back to the same reading it was before I moved. This effect does not noticeably happen on a commercial weighing machine for sacks of sand, flour or whatever or on a weighbridge. This is because the flimsy domestic machine is based on a cantilever which substantially changes deflection further when you redistribute the load, before some compensation mechanism (if any) kicks in. This is why the manufacturer's instructions say to stand quietly and squarely in the middle on both feet with both flat to obtain a correct reading.

+1

Can we ? Where is it proved that the origin of space (assumng there is such a point) coincides with the origin of time ?

But these are not whole numbers. Do you understand this mathematical notation 3 x 108 metres per second ? Do you think this means exactly 300,000,000 m/s ? Of course it doesn't. But mostly we work using numbers between 1 and 100 or 1 and 10 and multiply by a power of 10. That is accurate enough for many purposes. It was also the subject of my last post ( Avogadro's number 6 x 1023) which I certainly don't want to write out or even know to 23 digits.