Reversibility is not about speed but about small differences. Of course, small differences account for slow processes. But an expansion against the vacuum, even when it is slow (small nozzle), it is irreversible as pressure difference is not differentially small between the parts. So the change...
I think that space does not relate with time lineally. So 3mm would not be 100g's but 30g's. Said that, 3mm was only an assumption to note that tension on a steel cable can be much higer that just body weight. And of course, the guys did not behave as solid rods as you point out. But note that...
The fall of a 30cm jump will get you falling at 2.5m/s. This speed will go to 0 being the elevator cables to provide the force. I do not expect steel cables to be elastical so I'll suppose 3mm of elongation. Under these conditions, in less than 0.01 seconds you'll come to rest, which means more...
Wrong: it consumes hidroxide anion if this is the anion, or produces protons if the anion was cloride, phosphate, sulphate or whatever.
Are we observing the steady state pointed by Borek? Was the ancient sea far more alkaline? Or is there a process that consumes the acid?
I've visited several mountain ranges that are formed of limestone. Millions (billions, trillions) of tons of carbonate out of the water.
It must exist a process to counterpart the protons released by the organisms. It cannot be a buffer as with time it will also shift. Except if that buffer...
But organisms create structures of calcium and magnesium carbonate. As the three forms are in equilibrium this process wil acidify sea water.
And I'm just asking what is the counterpart of this process as sea water is not acidic.
If the answer is the weathering of rocks, then you should...
You are halving distance, but you are halving time intervals as well. So the arrow won't hit the tre on the time given. Which is true. But the arrow will in fact hit the tree as time does not stop.
Simple as this.
Several marine organisms including coral and shelfish create calcium and magnesium carbonate structures.
As carbonate ion comes from dissolved CO2, this process should acidify the ocean. But after millions of years, the ocean still is slightly alkaline.
What is the process that consumes acid...
This is the key idea both for origin of life and for evolution.
As self-replication when we adddress organisms is not perfect, those 'copies' that replicate more or maintain replication on difficult conditions will increase in number over those that replicate less. When you understand that life...
"These are undisputed scientific facts. We can Observe, Experiment, Hypothesize, and Repeat the experiment.
These are Scientific facts; whereas with evolution, we cannot even attempt to repeat the processes about which many people have theorized.
"
Take a bacteral strain. Put it on a media...
Gravity is only a theory, relativity is only a theory. Tomorrow the sun will rise is only a theory as God could decide to move the Earth to another place.
But you take for granted that objects will fall, that Earth will continue to orbit around a sun that will continue its nuclear fusion of...
There's by far more evidence for evolution by natural selection that for AGW. And again, the fact that it is difficult to prove the antropogenic origin of climate change does not imply, or should not imply, that climate is not changing. Basically because it IS changing, in the same way that...
Let's say in this way: evolution is a fact, it was already a fact before Darwin.
Natural selection is a fact. The original idea is from Malthus and both Darwin and Wallace had read it. What was new, what is a theory (with lots of evidence) is that small changes will develop in new species...
Let me be more precise: bacteria will not just fine tune its genetics to better perform on its environment. It can acquire new functionality. Bacteria can really take on new tasks. You can see it happen on a petry dish.