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Accurate solver of quartic equations.
[rquote=698113&tid=160058&author=woelen]Putting it on arXiv may indeed be an option. Is ther ... |
4-1-2025 at 19:25
by: annaandherdad |
Accurate solver of quartic equations.
[rquote=697947&tid=160058&author=woelen]
The issue with b and c both equal to 0 is in the ... |
2-1-2025 at 08:08
by: annaandherdad |
Accurate solver of quartic equations.
Hi woelen, I was looking at your home science web page on roots of polynomials. It is very nice th ... |
28-12-2024 at 16:56
by: annaandherdad |
Accurate solver of quartic equations.
woelen, did you ever publish your paper on finding the roots of quartics?
I had a research projec ... |
26-12-2024 at 19:09
by: annaandherdad |
From the Wiki: CaSO4 + SiO2 -> SO3 + CaSiO3. Does this actually work?
This was done at Whitehaven in the UK, google on it plus "sulphuric acid" you'll get lots of hits. ... |
20-1-2020 at 16:48
by: annaandherdad |
Acetate Salts From Vinegar For Synthesis of Acetic Acid
I bought some washing soda as a cheap source of sodium carbonate. When I dissolve it in water it m ... |
10-1-2020 at 18:14
by: annaandherdad |
Gassing myself with hydrogen sulphide...
I took a course in qualitative analysis in 1963. We used H2S to precipitate sulfides to help ident ... |
7-1-2020 at 11:16
by: annaandherdad |
Radium,actinium,polonium and radon glow
Yes, if you take any substance and heat it enough you will get a fully ionized plasma in which the a ... |
31-12-2019 at 09:03
by: annaandherdad |
Radium,actinium,polonium and radon glow
There are mechanisms by which a radioactive substance can produce light without surrounding gas. T ... |
30-12-2019 at 07:48
by: annaandherdad |
Vinegar to Glacial Acetic Acid Via Charcoal
[rquote=62623&tid=5528&author=jack-sparrow]
By the way, "natural" is a very confusing word ... |
25-12-2019 at 08:50
by: annaandherdad |
Scientists find possible ‘fifth force of nature’?
Here is the article:
https://arxiv.org/pdf/1910.10459.pdf
The result is primarily experimental, wi ... |
25-11-2019 at 09:44
by: annaandherdad |
Hydrochloric acid separation
This same topic was the subject of a recent thread:
http://www.sciencemadness.org/talk/viewthread.p ... |
23-11-2019 at 13:23
by: annaandherdad |
Igniting metals vs. flame test
I have a suggestion for someone with a spectrometer. Just make a strong sodium flame and look at i ... |
16-11-2019 at 18:22
by: annaandherdad |
Igniting metals vs. flame test
The characteristic colors are dominated by one spectral line, for example, the yellow sodium D line ... |
16-11-2019 at 15:48
by: annaandherdad |
Igniting metals vs. flame test
That's my point, the ions don't produce the 671 nanometer crimson line, neutral atoms do.
The ... |
16-11-2019 at 14:10
by: annaandherdad |
Igniting metals vs. flame test
Well to be precise the flame color is caused by a variety of spectral lines with a variety of intens ... |
15-11-2019 at 21:45
by: annaandherdad |
Archive of permanently deleted nile red videos not even available on patreon
I was one of the 1.4k viewers and I was impressed by the amount of work you put into the project, yo ... |
14-11-2019 at 15:04
by: annaandherdad |
H2SO4 on an extreme budget?
Anyone thinking of making sulfuric acid from sulfur or SO2 should search this site for "oleum", "su ... |
10-11-2019 at 17:19
by: annaandherdad |
Autoignition temperature of mixed gases
For what it's worth, He has about 2.6 the thermal velocity of N2, at the same T.
I've wondered ... |
10-11-2019 at 17:10
by: annaandherdad |
Igniting metals vs. flame test
I want to point out that the crimson color in the lithium flame test comes from neutral lithium atom ... |
6-11-2019 at 20:56
by: annaandherdad |
Capturing radon to observe decay
Check out a video on youtube by bionerd23, a German woman who makes videos about radioactivity. Sh ... |
26-10-2019 at 19:39
by: annaandherdad |
Change in weight due to the moons gravity.
The manner in which the moon moves into a higher orbit, due to a component of the force vector in th ... |
24-10-2019 at 20:39
by: annaandherdad |
Change in weight due to the moons gravity.
Yes, as the moon moves outward its angular velocity omega decreases but the radius r increases. T ... |
24-10-2019 at 11:43
by: annaandherdad |
Change in weight due to the moons gravity.
Correction to my last post: As the moon recedes from the earth, its gravitational potential energy ... |
24-10-2019 at 09:08
by: annaandherdad |
Change in weight due to the moons gravity.
The web article cited by Twospoons has a number of inaccuracies. For example, it says that the tida ... |
24-10-2019 at 06:27
by: annaandherdad |
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