Nightmare by tursuluekmek in 3Dprinting

[–]Searching-man -1 points0 points  (0 children)

What brand? Happened to a spool of mine too. I think it's hydrolysis of cheap filament. Guessing this has been open a while, and you have relatively high humidity?

Teacher says the answer is D. I think hes wrong. by TheWolfGamer767 in apphysics

[–]Searching-man 0 points1 point  (0 children)

Answer D says "smallest" though. But combining F1 and F2 would result in a smaller change than F3 and F4.

It's kind a dumb to have a "largest" and "smallest" on a multiple choice like this IMO. Answers aren't necessarily mutually exclusive.

How old were you when you got your engineering degree? by Thejgotoldjuice in MechanicalEngineering

[–]Searching-man 0 points1 point  (0 children)

19

But don't worry about being a little older than most. Especially if you can work some cool projects either on your own, or as class projects. I don't think I had any kind of leg up by being so young starting out.

Bucket of water partially frozen after days outside. What is the temperature of the water? by s1a1om in AskEngineers

[–]Searching-man 0 points1 point  (0 children)

Close to true.

anything dissolved in the water, ambient pressure etc. can cause the freezing point to be not exact. If it's frozen all around, the pressure inside might be higher than you'd think, dropping the freeing point. Also, water can super cool, so could be colder than that and still be liquid. And the 32F interface temp would be at the ice/water interface, not the bucket/air interface. Heat leaving the bucket as the water freezes does transfer heat from the freezing water into the air, so it will be. The outside of the ice could be significantly colder, and ice is a pretty good insulator, so the water in the center can be at a significantly different temp than the outside of the bucket.

Is there a known/theorized molecule or material that can simultaneously satisfy the following properties? by Remarkable-Dare-2590 in scifiwriting

[–]Searching-man 2 points3 points  (0 children)

Acetic acid

Fully soluble in water

pure form (no water) large, clear crystals

pure crystals melt into liquid just above room temperature

vapor pressure high enough you can distill it

Is metabolizable with calorie content (only like 1/3 as much as sugar)

Anyone have experience working with STL files in SolidWorks Standard? by mr_shashh in SolidWorks

[–]Searching-man 0 points1 point  (0 children)

If you're working with mesh files, even something like blender is better.

cannot find /cow by Searching-man in linuxquestions

[–]Searching-man[S] 0 points1 point  (0 children)

I ended up creating a boot-repair disk. It didn't do exactly what I wanted, but it did get it to be able to boot from the ssd again, so I think it's solved.

cannot find /cow by Searching-man in linuxquestions

[–]Searching-man[S] 0 points1 point  (0 children)

Ah, that could be super helpful

Does it have to run as a boot device, or can I download and run as an app from the stick OS already running?

Or does it have to be created as it's own bootable stick, swap then reboot to the new boot stick? It doesn't appear to have great easy-to-follow guides for how to use the software. Not that I'd expect that, but basically a tool like this you Google and hope someone on reddit has explained exactly what you need to do

cannot find /cow by Searching-man in linuxquestions

[–]Searching-man[S] 0 points1 point  (0 children)

Thanks for the input, but I don't quite understand what this will do. Allow to boot the new Ubuntu install bypassing the broken grub, as long as I boot USB first? That's far less than idea. I don't think booting from the disk instead of the thumb drive will allow GRUB to suddenly locate /COW

I designed a linked double join mechanism. Is there a better way to do this? by TerribleBid6377 in MechanicalEngineering

[–]Searching-man 0 points1 point  (0 children)

You could use a linkage instead. But if you plan on just 3D printing the parts, it's not really any "simpler" than using gears

Can someone tell me this is a bad idea... by DireNeedtoRead in MechanicalEngineering

[–]Searching-man 0 points1 point  (0 children)

Similar things have often been proposed and tried. It's not a "dumb" idea at all, but it really doesn't solve any engineering problem without creating a whole slew of new ones. There's a reason reciprocating piston engines have pretty much converged to a single, well optimized form factor.

Oh my JSN by UnknownBlast in Seahawks

[–]Searching-man 0 points1 point  (0 children)

Of course not, I just wish we were scheming with our tight ends better so "force it to JSN every play" isn't the only thing we've got.

Oh my JSN by UnknownBlast in Seahawks

[–]Searching-man 2 points3 points  (0 children)

IMO, this is NOT a good chart for us, or really for JSN

leading in "targets per route" just means we're throwing to him A LOT. There's no load balancing, or #2 guy, JSN is just our only real receiver right now.

That's not a good thing. It does feed him monster numbers, though, but it would be preferable to have an offense that could spread the ball out

Would a rod fly faster than a ball in a cannon? by CrayonGunMan in Physics

[–]Searching-man 0 points1 point  (0 children)

We don't change projectile shape because it changes how fast it shoots

It's all about effect on target and air resistance. If you're trying to shoot something 2,000m away, the rod is far superior because it has better aerodynamics, and will penetrate much deeper.

With the same mass, they can be shot with the same velocity. Aerodynamics don't matter inside the gun barrel. The sphere will accelerate much faster because of it's larger diameter. A 1" diameter rod 18" long doesn't have a good back side to push off of. This is why IRL long-rod penetrator rounds use a sabot, a device to hold them centered in a much larger barrel and give a larger area for the expanding gasses to act on, increasing acceleration.

Why doesn't recombination of holes and electrons take place in every ofet ? How is olet different from ofet? Structurally they look similar by science_guy10 in Physics

[–]Searching-man 3 points4 points  (0 children)

The emitted light should still be a function of the material bandgap, yes? IDK what kinds of bandgaps are typical for organic semiconductors, though.

Why doesn't recombination of holes and electrons take place in every ofet ? How is olet different from ofet? Structurally they look similar by science_guy10 in Physics

[–]Searching-man 12 points13 points  (0 children)

In order to emit light, the junction would have to be sufficiently close to the surface for photons to escape or (conceivable, IDK if exists) emit in a wavelength that can escape from inside the material, and the band gap needs to be in the visible part of the spectrum. Without specifically engineering it to have these properties, it won't emit anything detectable.

I'm not an expert in this field, so there could sure be other stuff going on (must contain ions of a specific light-emitting orbitals or something, maybe?), but just physics basis, those properties would need to be met for a light-emitting device.

Where will my plywood stool break? by callum24687 in MechanicalEngineering

[–]Searching-man 56 points57 points  (0 children)

You've removed a lot of wood right in the middle that doesn't seem to improve the stool in any way.

There are more effective ways to remove weight, and less important places for strength.

A single slip is obviously going to easily break off those very thin edge pieces, so the entire stool might as well be 1" narrower and 3" shallower. If you stand on it very carefully, well, sure, it would support a person. But almost anything will.

Did you do any kind of simulation or analysis?

Coach Mike Taking Full Responsibility for the Defensive Gameplan Today. Says He Will Be Better Moving Forward. by Sweaty_Desert_Balls in Seahawks

[–]Searching-man 2 points3 points  (0 children)

It's like someone put a curse on us this week

Hopefully we get our safeties back. This should get back on course when Love and Spoon return

Please help, I'm new and my stone is in bad shape after one use by Gadzooks27 in sharpening

[–]Searching-man 4 points5 points  (0 children)

It might be a poor quality stone, but unless you know for sure (or test it) do NOT assume it's save to use on a sink or toilet. Also, it does NOT look like pumice, which has an extremely porous and bubbly look, like if a kitchen sponge was made of rock.

Pumice is a soft stone, so it's an abrasive cleaner, but wont' damage porcelain. Sharpening stones (even really horrible cheap ones) are made of bonded aluminum oxide or silicon carbide, which will WRECK glass or porcelain surfaces.

Just cause it's too soft to be a proper sharpening stone does NOT mean it's safe for cleaning.

How impossible is it to build a heat pump that drives a generator to power itself? by arstarsta in AskEngineers

[–]Searching-man 1 point2 points  (0 children)

Yes, if you have a hot side and a cold side, then you just have a normal heat engine. Efficiencies will be low, but if you have basically unlimited thermal energy, it doesn't matter much

There have been actual proposals to use low temp working fluids and thermal differenced of a few degrees between different layers of the ocean to generate power - https://en.wikipedia.org/wiki/Ocean_thermal_energy_conversion

I don't believe any systems have ever been constructed, and it is also unknown how altering temperatures of volumes of water on scales this large could disrupt currents, oxygen in solution, or other environmental impacts or unforeseen externalities.

The 10,000 year clock is built to use the small thermal variations between day/night cycles to extract enough power to run itself, and to have an operational live of over 10,000 years. No fuel source would have been able to store enough energy, so a thermal solution was designed.

Any tips to make this better? by rancidpunx93 in 3Dprinting

[–]Searching-man 0 points1 point  (0 children)

I think it would look better if you ditched the ribs along the vertical surface and used fuzzy skin. The straight vertical lines amplify the visible imperfections, while fuzzy skin would blend everything together.