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Posts posted by Sensei
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What is the source of Potassium40 in the Pacific and how long has it been there?
Potassium-40 is everywhere, including you, not just in Pacific ocean.
0.012% of any Potassium is radioactive.
You can build Cloud Chamber and put inside K2O, KNO3, K2CO3 , KHCO3 or similar compound, and see their traces.
KNO3 is used as synthetic fertilizer. Ground water washes it out from fields to rivers then to sea.
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The link above is to a video of Steven Starr(Director of The Clinical Laboratory Science Program Of The University Of Missouri).
In the video He puts into perspective Potassium40 and Cesium137.
"Comparing Potassium40 to Cesium137 is like comparing a stick of dynamite to an Atomic Bomb"
Decay energy released by K-40:
Isotope Potassium-40
Protons 19 Neutrons 21
Mass 39.964
Nucleus Energy 37216.5 [MeV]
Alpha decay prohibited (-6.43826 MeV)
Proton emission prohibited (-7.58196 MeV)
Neutron emission prohibited (-7.79913 MeV)
Potassium-40 -> Calcium-40 + e- + Ve + 1.31108 MeV
Potassium-40 -> Argon-40 + e+ + Ve + 0.482698 MeV
Potassium-40 + e- -> Argon-40 + Ve + 1.5047 MeV
(all products stable)
Decay energy released by Cs-137
Isotope Caesium-137
Protons 55 Neutrons 82
Mass 136.907
Nucleus Energy 127500 [MeV]
Alpha decay prohibited (-3.08395 MeV)
Proton emission prohibited (-7.40961 MeV)
Neutron emission prohibited (-8.27782 MeV)
Caesium-137 -> Barium-137 + e- + Ve + 1.17564 MeV
Beta decay+ prohibited (-5.1881 MeV)
Electron capture prohibited (-4.16611 MeV)
(Ba-137m isomer quick decay, then Ba-137 stable)
As you can see energy released by decay of K-40 releases slightly more energy than Cs-137.
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H2O
in Speculations
The concensus among the intelligentia is that the solar winds have blown of all the H2O,
You misunderstood/ignored my post #2.
H2O is boiling when we will get rid of atmosphere (thus pressure of gas particles).
Like you can see here in vacuum chamber.
https://www.youtube.com/watch?v=pOYgdQp4euc
So if we have planet with liquid water, and atmosphere. And something will destroy atmosphere, liquid water won't be liquid anymore, and its vapors will be also blow away (after all it's lighter molecule 18 g/mol, than N2 28 g/mol, or O2 32 g/mol).).
My question about the steeling of H2O from the H2SO4 + SO3 was ignored.
H2SO4 sulfuric acid 98.078 g/mol (5.5 times more mass than water)
SO3 sulfur trioxide 80.063 g/mol (4.4 times more mass than water)
Higher mass = more energy needed to accelerate it enough to have escape velocity.
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I noticed pretty nice video digital camera with interval recording 1s-60s:
This LCD preview screen on wristwatch-like is also very cool thing. Wondering at what max distance it's working.
According to website
"Control up to 5 Action Cam via phone1 or LiveView™ Remote"
So you can have one wristwatch, and couple lab experiments going and recorded in one room, and switch between them and monitor their states from distance from second room..
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Three things I should always have direct, mechanical control of in a car:
Brake
Accelerator
Steering
In electric car, which is future, you won't have.
Acceleration = change of resistance (and thus change of current), or change of voltage (and thus change of current).
Ultimately, I think my fundamental problem with drive by wire systems is that the computer is actually in control of the car, not me, and that goes against every instinct I possess. I admit, it's an emotional, visceral, reaction with only the most passing glance in the direction of logical, but there you have it. When I board a train, or a plane, or get into the passenger seat of another car, I have acknowledged a release of the determination of my own fate for the duration of this trip. But when I'm physically holding onto the steering wheel, the idea that I'm not really the one who decides which way the wheels point frankly scares the hell right out of me.
Self driving car will look like this:
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Circle, sphere, line etc. are only at high enough distance/scale.
At quantum level, circle would be made of single atoms, and wouldn't be circle anymore, but approximation of circle.
Similar like circle on computer monitor screen is made of pixels. It just appears round from distance.
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You've also explained a phenomenon I just remembered: I have worked with a partial pressure hydrogen firing furnace that uses hydrogen forming gas and high temperatures to removed surface oxides... Often times stainless parts stick together a little after firing... I always wondered about it because the process is certainly below the melting point of the stainless... I bet they're welding together a bit.
I have yet another explanation of such quasi-welding.
When you heat/cool object, its volume is changing, so do little roughness on it, and microscopic mountains on two surfaces jam together.
After cooling down it's extremely hard to disconnect them.
I am fighting with this everyday during distillation when two pieces of glass are nearly impossible to disconnect. Couple times thought glass will be lost.
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If anti-matter is to be used as a fuel, what would the fuel tank be made of?
Devices like Penning trap
http://en.wikipedia.org/wiki/Penning_trap
and magnetic trap
http://en.wikipedia.org/wiki/Magnetic_trap_%28atoms%29
could be used to hold it.
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In ancient world the most common was foot length.
(calculation of Earth radius was done ~200 BC by Eratosthenes)
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This reasoning doesn't entirely work. If we assume -1 * -1 = -1, then we have
-5 * -4 = -20
-5 = -20/-4 = -20 * -1/4 = -5, as expected.
And then you have:
-5 * (-4) = -20
-5 * 4 = (also) -20
5 * (-4) = (also) -20
Only one would lead to positive result:
5 * 4 = 20
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If we have:
[math]x * y = xy[/math]
we can divide both sides by y:
[math]x * y/y = \frac{xy}{y}[/math]
and get:
[math]x=\frac{xy}{y}[/math]
f.e.
[math]-5*(-4)=+20[/math]
[math]-5=\frac{+20}{-4}[/math]
[math]-5=-5[/math] (true)
If you try the same with your assumption
"If we assume that (-1) (-1)=-1 and (-2)(-2)=-4"
it will fail.
Left side of equation, won't match right side.
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Is it possible for us to eat as many kinds of good as we want and keep shape at the same time?
Top sportswomen here said she is eating 6000 kcal per day. You would like to have muscles as she..
I was eating something 3000-4000 kcal (without counting 3-4 beers). And making 300 push ups/day (my record is 1000 or 1100 in a day) + a lot of other trainings. With constant BMI ~21
Currently day training is weight lifting 3600 kg in couple various exercises in series during whole day.
Eat like Hercules:
...and work like Hercules:
https://www.youtube.com/watch?v=v0FWHtuli9A
..as long as you keep thinking about particles & quantum physics while doing all these exercises..
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H2O
in Speculations
Another thing: find flux of protons per second per area unit, multiply by time planet exists and Earth surface area pointing at the Sun.
Find volume of sea, calculate quantity of H2O molecules,
and compare these values. Tell us what numbers you got and from where for verification.
Since you're not willing to do scientific work, I will do it for you.
Volume of sea is 1.3 bln km3 according to:
http://en.wikipedia.org/wiki/Ocean
It's 1.3*10^18 m3
Density of water is 1 g/cm3
so 10^6 g/m3
m=1.3*10^18*10^6=1.3*10^24 grams
Molar mass of water is 18 g/mol
1.3*10^24 g / 18 g/mol = 7.222*10^22 mol
If Earth exists for 4.5 bln years, *365*24*3600s= 1.42*10^17 s
7.222*10^22 mol / 1.42*10^17 s = 508574 mol/s
average rate of production of water per second.
To create 1 mol of H2O there is needed 0.5 mol of Oxygen.
So there is needed 254287 mol/s of O2
1 L of O2 gas has 0.0446 mol.
So 254287 / 0.0446 = 5701505 L/s of Oxygen must be gone from atmosphere.
It's 5701.505 m3 of pure Oxygen, per second.
* 3600 * 24 = 0.49 km3 of Oxygen gone per day. 2.34 km3 of air losing its Oxygen.
Plausible or not?
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I have heard of these students who found out how to convert light into mass.
It's called pair production. And it's known for 80 years.
http://en.wikipedia.org/wiki/Pair_production
So not sure about what students you're talking about..
It requires a lot of energy. Half million more than has green photon.
so i would think it could be done in reverse.
It's also known for ages. It's called annihilation.
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where the gas bubbles come from, what reaction?
Do you generally know how to check which gas is produced in (any) reaction?
- if it's exploding after providing source of fire, it's typically Hydrogen (reacting with Oxygen from air). (could be also methane, ethane, and other flammable gas, but they will create CO2 and H2O, while Hydrogen only H2O)
- if fire is more powerful, it's Oxygen.
- Chlorine you can smell directly (and not recommended/not possible for longer period of time).
- Noble gases can be detected by ionization by high voltage. Their spectral lines, thus color of light in discharge tube is different.
For others more sophisticated methods of detection are needed.
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H2O
in Speculations
If the solar wind is protons and electrons with high kinetic energy = temperature, my chemistry tells me that the protons will behave like hot hydrogen and combine with atmospheric oxygen, to be neutralised from the sea of electrons pervading the Earth. This not only explains the trapping of hydrogen by the Earth, where this gas (H2) has escape velocity at normal temperatures. Simultaneously, the auroras have an explanation for the colour variation N & S, and so do sprites, more red like Aurora Australis.
Escape velocity from surface of Earth is 11200 m/s, while Hydrogen gas has velocity ~1200 m/s @ 20 C..
Another thing: find flux of protons per second per area unit, multiply by time planet exists and Earth surface area pointing at the Sun.
Find volume of sea, calculate quantity of H2O molecules,
and compare these values. Tell us what numbers you got and from where for verification.
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The answer I got at that point is : cut and paste
20740059257
Website is asking for the LOWEST possible.
After entering yours, we can see "The answer is incorrect! That is not the lowest possible value for X".
I wrote C/C++ app (in less time than writing this reply), and it's crunching stuff. So far working for 104 minutes, and didn't find answer yet (and there is chance never will)..
I attached it, so you can review, compile and run on your machine.
Would be better to convert it to multi-threading. This would accelerate 8 times on Core i7.
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H2O
in Speculations
Temperature and pressure (from atmosphere) are right.
You don't have to search far, and look at other planets.
Take for example Moon. It's not so far away from Earth.
But if you would leave water tank on dark side of it, it would instantly freeze.
If you would leave water tank at day, it would instantly vaporize because photons from the Sun would heat it above boiling point temperature.
When the Sun will increase power in future it'll happen to Earth anyway.
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This forum is full of disbelief (kufr) and idolatry (shirk) and I would like to change it.
Not possible..
ps. Come back when you will have some science experiment to show us.
ps2. When you have knowledge, you don't need to belief.
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Confusion arise because some people use "mass" while they mean "invariant mass",
and other people use "mass" while they mean "relativistic mass" (total energy divided by c2: m=E/c2).
When two such incompatible persons meet they need to figure out in what sense they use "mass" in the first place.
Suppose so we have hermetic box with mirror walls and inside of it (not visible from outside) light source.
It's starting emitting light. IMHO box doesn't get lighter just because photons are emitted. They're all there, just bouncing from mirror walls..
If it would become lighter (less mass) we could detect when light source is turned on or turned off, on weighing scale.
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How can it be proved experimentally that BaSO4 is insoluble?
Do you have BaSO4 or is it theoretical question.. ?
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Sorry, but I see no invention made by you.
How are you going to extract energy?
Energy generator needs to:
- increase temperature of body.
This is what burning carbon, burning oil, burning methane, nuclear power plant, power stations are doing.
This body is typically water, which changes to gas state, and moves rotor blades of electric generators.
- increase velocity of electrons directly (water dam power station, wind power station).
- chemical reaction changing one compound to another compound, which later can be f.e. burned and release energy at will.
f.e. electrolysis of water to Hydrogen and Oxygen, then liquefy, and burn in rocket while launching in a few seconds.
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Are you aware that you're turning iron to magnet by placing close it to permanent magnet?
Take for example steel knife, magnet and needle.
Touch needle by knife, they don't attract each other.
Attach permanent magnet to one end of knife.
Touch needle again by other end of knife.
Needle will be attracted by knife.
Disconnect magnet from knife end.
Needle will disconnect too.
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I am confused , the copper should not be attracted to a magnet.
Here is even nicer version
It's not just copper, I said metal. And you don't need pipe actually. U shape or L shape metal works as well.
I was doing it hundred time with different materials (the most often Aluminium), with different magnets.
With stopwatch/digital camera (and compare frames in image editing software) you can measure speed of passing through them.
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How did Newton came up with the idea of prism experiment ?
in Classical Physics
Posted
Simple experimentation *)
Anybody could came up with this if enough playing.
*) I am doing it on daily basis.
f.e. today noticed that couple (transparent) chemical compounds that I left alone couple months ago in hermetic containers turned color to cyan.. and other one has some fluffy gel (used to be transparent like water)..
I will have to repeat everything from scratch couple times, and wait another half year for results..
Good that I at least wrote what compounds were used on containers..