Search found 156 matches

by Himself
Fri Aug 31, 2018 8:02 pm UTC
Forum: Science
Topic: Favorite home experiments
Replies: 585
Views: 444214

Re: Favorite home experiments

All acid-base reactions are going to be exothermic, so there's nothing special about acetic acid and magnesium hydroxide. I realize that. But my thought was demonstrations you can do with safe chemicals, considering that the demonstration from my chemistry teacher used sulfuric acid and ammonia. Th...
by Himself
Thu Aug 30, 2018 7:22 pm UTC
Forum: Science
Topic: Favorite home experiments
Replies: 585
Views: 444214

Re: Favorite home experiments

I accidentally found a good demonstration of an exothermic reaction (as well as an acid-base reaction) with safe chemicals. In my high school chemistry classes, when the teacher wanted to demonstrate an exothermic reaction it would either involve fire or strong acids and/or bases. Just mix five part...
by Himself
Sat Aug 18, 2018 9:53 pm UTC
Forum: Science
Topic: Science-based what-if questions
Replies: 622
Views: 92945

Re: Science-based what-if questions

The short answer is - yes, a large amount of energy (no matter the form) dumped into a small volume of air will indeed resemble a nuclear explosion. The exact mechanisms of energy propagation will differ, but the gross end result will be the same - thermal flash, plasma fireball, shockwave and a mu...
by Himself
Mon Aug 13, 2018 12:03 am UTC
Forum: Science
Topic: Science-based what-if questions
Replies: 622
Views: 92945

Re: Science-based what-if questions

A gram of matter cannot just "turn into energy." Energy is a property of a system, not a thing in itself. It also can't just "turn into X-rays and gamma rays" unless it annihilates antimatter, because lepton and boson numbers are conserved. I figured that. But many What-Ifs deal...
by Himself
Sun Aug 12, 2018 6:30 pm UTC
Forum: Science
Topic: Science-based what-if questions
Replies: 622
Views: 92945

Re: Science-based what-if questions

If a gram of matter were to spontaneously turn into energy, would the effect be noticeably different from a nuclear explosion? I know one gram of mass is equivalent to about 90 TJ or approximately the yield of Fat Man, but in any nuclear explosion we have to consider the bomb itself, which is vapori...
by Himself
Fri Jul 27, 2018 8:13 pm UTC
Forum: Movies and TV Shows
Topic: Thoughts on Goa'uld: population growth and similarity to Yeerks
Replies: 16
Views: 2926

Re: Thoughts on Goa'uld: population growth and similarity to Yeerks

What of the other point I bring up. Is the similarity between Goa'uld and Yeerks more than coincidental?
by Himself
Sat Jul 21, 2018 7:27 pm UTC
Forum: Movies and TV Shows
Topic: Thoughts on Goa'uld: population growth and similarity to Yeerks
Replies: 16
Views: 2926

Re: Thoughts on Goa'uld: population growth and similarity to Yeerks

speising wrote:if you meant the jaffa, as i understood it they were entirely controled by the Goa'uld and carried the symbiotes because they were ordered to do so (or rather, because it was a religious ritual created by their gods)

But also because they would die without the symbiotes, making them doubly enslaved.
by Himself
Sat Jul 21, 2018 6:33 am UTC
Forum: Movies and TV Shows
Topic: Thoughts on Goa'uld: population growth and similarity to Yeerks
Replies: 16
Views: 2926

Thoughts on Goa'uld: population growth and similarity to Yeerks

I'm a long-time fan of Stargate SG-1 and I've recently been revisiting the series and a few thoughts occurred to me. The first is how do the Goa'uld prevent explosive population growth. The Jaffa serve as incubators for young Goa'uld and it seems that a single Jaffa will carry several symbiotes to m...
by Himself
Tue Jul 10, 2018 7:22 pm UTC
Forum: General
Topic: Why a yield sign and not a stop sign?
Replies: 4
Views: 1433

Why a yield sign and not a stop sign?

I grew up in a house on a side street. It's unimportant enough that even where it intersects other side streets, it is usually the one with the stop sign. But, at the only place in my neighborhood where it intersects one of the main streets, it has a yield sign. It's a pretty normal intersection. Th...
by Himself
Sat Jun 30, 2018 4:38 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 2013: "Rock"
Replies: 42
Views: 5305

Re: 2013: "Rock"

As a geology student I think something like this just about every time I pick up a rock. Don't get me started on atoms and molecules.
by Himself
Sun May 27, 2018 5:21 pm UTC
Forum: School
Topic: Awesome Student Quotes
Replies: 867
Views: 181706

Re: Awesome Student Quotes

Freshman biology class September 2007: "Do snowflakes have cells?"
by Himself
Fri May 25, 2018 4:28 am UTC
Forum: Fictional Science
Topic: Stable free oxygen on non-life planet
Replies: 4
Views: 1616

Re: Stable free oxygen on non-life planet

One instance where you might get the stable free oxygen is on a water world with oceans deep enough the bottom would consist of high-pressure ices. That would prevent or at least greatly inhibit any interaction between the atmosphere and rocky crust. Not only would it act as a barrier, but, I've als...
by Himself
Fri Mar 16, 2018 3:26 am UTC
Forum: Science
Topic: Delicious Martian Salt
Replies: 10
Views: 3146

Re: Delicious Martian Salt

One aspect of geochemistry that may be a factor is that on Earth we have continental crust with a roughly granitic composition, which is fairly rich in sodium. Weathering that granite, I figure, is a possible source of sodium for sea salt. Mars, as far as we know, has no granite. Most of its surface...
by Himself
Fri Feb 23, 2018 4:00 am UTC
Forum: Fictional Science
Topic: Airlock full of water exposed to vacuum
Replies: 10
Views: 3206

Re: Airlock full of water exposed to vacuum

If this happens around Earth's orbit the solar radiation might be enough to keep the water from freezing, considering what happens to comets.
by Himself
Tue Feb 13, 2018 4:21 pm UTC
Forum: General
Topic: Can Renesemee catch on?
Replies: 45
Views: 8224

Re: Can Renesemee catch on?

While I would never change it, I do have one little pet peeve about my name: I have two middle names, but many official forms only allow for one middle initial.
What is fun is that my middle names make up a decent full name, as they are my grandfather's first name and my mother's maiden name.
by Himself
Sun Feb 11, 2018 12:03 am UTC
Forum: General
Topic: How did a discontinued foreign coin end up in my car?
Replies: 42
Views: 6933

Re: How did a discontinued foreign coin end up in my car?

The flying circuits are unrelated to the flux capacitor (other than both being powered by Mr. Fusion). Or are you suggesting that he somehow use time travel to circumvent the distance barriers? Like going back in time to when there wasn't an ocean between (what would become) America and France, and...
by Himself
Wed Feb 07, 2018 6:45 am UTC
Forum: Science
Topic: Expansion in the long... (very) long term
Replies: 9
Views: 3032

Re: Expansion in the long... (very) long term

Manipulating quasars and possibly moving galaxies would suggest the ability to control spacetime curvature. If we get up to that level then I figure we could build a working Alcubierre drive.
by Himself
Wed Feb 07, 2018 6:29 am UTC
Forum: General
Topic: How did a discontinued foreign coin end up in my car?
Replies: 42
Views: 6933

Re: How did a discontinued foreign coin end up in my car?

I found a 1/2 French franc coin in my car in the US. The Franc was discontinued in 2002 in favor of the Euro, while the car is a 2010 model. Neither I nor my father who owned it previously have been to France; at least not in the past 15 years. Could it have somehow circulated among US coins all th...
by Himself
Fri Feb 02, 2018 1:10 am UTC
Forum: General
Topic: Can Renesemee catch on?
Replies: 45
Views: 8224

Re: Can Renesemee catch on?

Women and men name their li'l girls weird things still. Yet... I guess... having ban hammered names for being obscene is okay? I know I wouldn't wanna be named, "Anal." Or: "Talula Does the Hula from Hawaii." Though... if a mommy or daddy wanna name their kids weird, strange, of...
by Himself
Thu Feb 01, 2018 9:10 pm UTC
Forum: General
Topic: Can Renesemee catch on?
Replies: 45
Views: 8224

Re: Can Renesemee catch on?

What about counties like New Zealand, which have lists of banned names? I think it's good you can't name your kid "Anal" or "Talula Does the Hula From Hawaii."
by Himself
Thu Feb 01, 2018 7:46 am UTC
Forum: Gaming
Topic: Space Engine - a simulator
Replies: 5
Views: 3267

Re: Space Engine - a simulator

I'm resurrecting this thread because Space Engine is an awesome program and it has come a long way since the original post.

scr00004.jpg
scr00034.jpg
scr00065.jpg
scr00063.jpg


And these are from a few custom star systems I'm working on:
scr00011.jpg
scr00050.jpg
scr00060.jpg
by Himself
Thu Feb 01, 2018 3:10 am UTC
Forum: General
Topic: What's your racial makeups and what did you learn?
Replies: 46
Views: 7839

Re: What's your racial makeups and what did you learn?

I am, as I understand, 1/4 Russian, 1/8 Lebanese, 1/8 Syrian with bits of either Czech or Slovak as well a Yugoslavian, Scottish, Irish, Dutch, English, Austrian, and Comanche. Some of the details on my father's side art a bit fuzzy. My last name is Germanic but my paternal grandfather immigrated fr...
by Himself
Wed Jan 31, 2018 4:46 pm UTC
Forum: General
Topic: Can Renesemee catch on?
Replies: 45
Views: 8224

Re: Can Renesemee catch on?

Stephanie Meyer even makes it up for her fictional daughter of Bella and Edward Cullen? She might as well have calls her, "Moon Unit Zappa" or something. 'Cause: "Renesemee" is not an actual female name, there are TONS of females'/girls' names she could have chosen. Why Reneseme...
by Himself
Wed Jan 31, 2018 4:28 pm UTC
Forum: General
Topic: How did a discontinued foreign coin end up in my car?
Replies: 42
Views: 6933

Re: How did a discontinued foreign coin end up in my car?

The year on the coin is 1992. I looked it up and it doesn't look like it's worth much to coin collectors. I keep change in the console but that would suggest the coin was circulating despite not really matching any U.S. coin.
by Himself
Wed Jan 31, 2018 7:08 am UTC
Forum: General
Topic: How did a discontinued foreign coin end up in my car?
Replies: 42
Views: 6933

Re: How did a discontinued foreign coin end up in my car?

Have you read "Reaper Man", by Terry Pratchett? Something similar to the Snow Globe eggs? (Or just a divine gift, like the things that the Goddess Anoia possibly brings into existence to stop drawers opening.) Unfortunately I'm not versed in the works of Terry Pratchett. But if we're havi...
by Himself
Wed Jan 31, 2018 12:24 am UTC
Forum: General
Topic: How did a discontinued foreign coin end up in my car?
Replies: 42
Views: 6933

Re: How did a discontinued foreign coin end up in my car?

True, but those coins are still legal tender in Canada. This was discontinued and it doesn't quite match the size of any U.S. coin.
by Himself
Tue Jan 30, 2018 10:05 pm UTC
Forum: General
Topic: How did a discontinued foreign coin end up in my car?
Replies: 42
Views: 6933

How did a discontinued foreign coin end up in my car?

I found a 1/2 French franc coin in my car in the US. The Franc was discontinued in 2002 in favor of the Euro, while the car is a 2010 model. Neither I nor my father who owned it previously have been to France; at least not in the past 15 years. Could it have somehow circulated among US coins all thi...
by Himself
Mon Jan 29, 2018 11:23 pm UTC
Forum: General
Topic: Can Renesemee catch on?
Replies: 45
Views: 8224

Re: Can Renesemee catch on?

Hopefully none of those kids grow up to be famous.
by Himself
Mon Jan 29, 2018 10:24 pm UTC
Forum: General
Topic: Can Renesemee catch on?
Replies: 45
Views: 8224

Can Renesemee catch on?

One disturbing thought has occurred to me: that Renesemee may become a popular name some day. Despite Stephanie Meyer urging them not to, a number of Twilight fans have apparently named their daughters Renesemee. As I understand it, the name Samantha was practically unheard of before Bewitched. What...
by Himself
Sun Nov 05, 2017 7:38 am UTC
Forum: Fictional Science
Topic: Most realistic magic system and areas for improvement
Replies: 27
Views: 7794

Re: Most realistic magic system and areas for improvement

I'd say a good candidate is what Patrick Rothfuss came up with for the Kingkiller series with Sympathy. It basically accounts for a decent amount of physics with much of it based on applying the right amount of energy from the right source. A close second would probably be the pymary in the webcomic...
by Himself
Sun Nov 05, 2017 12:39 am UTC
Forum: Science
Topic: Uranium more Common than Zinc
Replies: 10
Views: 3039

Re: Uranium more Common than Zinc

Yes, solubility is a key thing. Uranium will form compounds and go into rock more readily than gold. Since it doesn't fit well in many crystal lattices it is also one of the last components to crystallize in a cooling magma. As a result it tends to get concentrated in continental crust.
by Himself
Tue Sep 19, 2017 4:37 pm UTC
Forum: Science
Topic: Popping a Balloon
Replies: 2
Views: 1542

Popping a Balloon

I've had this question in my head for some years now. Back when I was in high school a guy in my homeroom brought in a balloon for his birthday. It was clearly overinflated. A friend of his started lightly punching the balloon. After we had settled down and were listening to the day's announcements ...
by Himself
Fri Sep 08, 2017 8:14 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1887: "Two Down, One to Go"
Replies: 20
Views: 3949

Re: 1887: "Two Down, One to Go"

Well, here's to 2024 for the eclipse.
by Himself
Wed Aug 23, 2017 2:24 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1880: "Eclipse Review"
Replies: 51
Views: 7666

Re: 1880: "Eclipse Review"

I wouldn't expect there'd by much to see with a supernova. It would be so bright that you wouldn't see what was happening.
by Himself
Mon Jul 10, 2017 10:41 pm UTC
Forum: What If?
Topic: FEEDBACK: what if ? GLOBAL WINDSTORM
Replies: 4
Views: 6125

Re: FEEDBACK: what if ? GLOBAL WINDSTORM

I'd we go with the idea of all the gasses keep moving while all solids and liquids stop presents some interesting details to look at. Consider the air inside people's lungs or inside buildings. In the latter case it might not make much difference except in underground structures and caves.
by Himself
Tue Jun 20, 2017 10:42 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1852: "Election Map"
Replies: 30
Views: 6939

Re: 1852: "Election Map"

The interpretation depends on the position of the observation point. There may very well be some sort of convergence or divergence occurring along a SW-NE axis.
by Himself
Thu May 25, 2017 10:35 pm UTC
Forum: What If?
Topic: What-If 0004: "A Mole of Moles"
Replies: 89
Views: 77854

Re: What-If 0004: "A Mole of Moles"

I am resurrecting this thread to pose a new question: Would the mole moon convect? If we go with purely compressional heating then the temperature profile (molotherm?) would depend solely on pressure. Any parcel of meat moved up or down would change temperature at the same rate as the ambient adiaba...
by Himself
Wed May 10, 2017 10:46 pm UTC
Forum: Science
Topic: Storing Nuclear Waste on the Moon
Replies: 57
Views: 11995

Re: Storing Nuclear Waste on the Moon

The ocean trench idea is one to think about. Depending on the subduction zone and how deep we bury the waste, it may not even end up in the mantle, but would rather be scraped off the subducting plate along with the upper sedimentary layers and become part of the accretionary prism. In that case the...
by Himself
Fri Apr 21, 2017 1:57 pm UTC
Forum: Science
Topic: Safe electrolytes for electrolysis.
Replies: 14
Views: 3524

Re: Safe electrolytes for electrolysis.

I'll try the magnesium hydroxide and see how that works.
by Himself
Thu Apr 20, 2017 2:57 pm UTC
Forum: Science
Topic: Safe electrolytes for electrolysis.
Replies: 14
Views: 3524

Re: Safe electrolytes for electrolysis.

Even given the low solubility of magnesium hydroxide? Though I see the appeal of limiting what anions are present.

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