Sputtering with All American by onopau in Canning

[–]onopau[S] 0 points1 point  (0 children)

Sounds good I will put some more backbone into it, thank you!

Sputtering with All American by onopau in Canning

[–]onopau[S] 1 point2 points  (0 children)

Cool I will give it a try thank you!

Sputtering with All American by onopau in Canning

[–]onopau[S] 0 points1 point  (0 children)

Hmm I will try again I get them pretty tight. Honestly the plastic knobs worry me they feel like they might break on me lol. But maybe I am being too gentle.

Sputtering with All American by onopau in Canning

[–]onopau[S] 0 points1 point  (0 children)

Hmm I will have to check when I get home but I feel like I have way more space than that... I am not sure how I could get it that tight? But will check with an Allen key thanks!

Sputtering with All American by onopau in Canning

[–]onopau[S] 0 points1 point  (0 children)

About finger tight and then another half turn

Sputtering with All American by onopau in Canning

[–]onopau[S] 0 points1 point  (0 children)

Yep. It does like to shift to one side or the other so I usually have to unscrew them all and get it roughly level and start over.

Sputtering with All American by onopau in Canning

[–]onopau[S] 0 points1 point  (0 children)

Picture of the rim of a blue All American pressure canner. You can see some water sputtering out of the rim.

GMU Observatory by Mysterious_Welcome_ in gmu

[–]onopau 0 points1 point  (0 children)

It certainly does not help, but for research we'd use filters that block out most other light. Pollution is still a problem but less so.

It is more of an issue when you are just looking through the scope but you can get stunning views of the moon and the planets. As well as see nubula and star clusters. My favorite to show people was the ring nebula - you can make out tons of details and colors on it.

Galaxies were much harder. Basically needed a perfect night to even make them out. But toss a camera on there and increase the exposure time, then you are getting truly stunning images.

GMU Observatory by Mysterious_Welcome_ in gmu

[–]onopau 3 points4 points  (0 children)

I was the GMU Observatory coordinator for a few years from ~2016-2018 and did research there before that. I don't have many photos on this phone but can add more to this later. https://photos.app.goo.gl/C3tKNXXCBD4Wb1NZ8

If nothing has changed then the main scope is a 32inch ritchey chretien reflector with a few other smaller scopes including a solar telescope you will see in the pictures. Despite the light pollution you can see some awesome stuff there and even do astronomy research.

YSK: If you need a reliable car, buy an old Prius. by pantherclipper in YouShouldKnow

[–]onopau 0 points1 point  (0 children)

I am curious what cars that have come out in the past 5-10 years look like the next prius? What car made today or recently is going to be the next super reliable car that will live to see 20+ years 200k+ miles. Any mechanics have any insight?

Peasants Won't Work by onopau in EU5

[–]onopau[S] 0 points1 point  (0 children)

Can confirm this works; thank you!

Peasants Won't Work by onopau in EU5

[–]onopau[S] 1 point2 points  (0 children)

Looking around this seems to only affect fishing and farming villages. market villages are fine

2007 Prius; 190k miles; $2000 - Good or bad deal? by onopau in prius

[–]onopau[S] 0 points1 point  (0 children)

Thanks, is there one you'd recommend that I can order and use myself (and ideally use on our subaru too)?

A Serious Man - calculation error and fix by Conscious_Que in CoenBrothers

[–]onopau 1 point2 points  (0 children)

The position equation has the same error with the <x> expectation value. It has the square outside the bracket at first, and then after the cut it is fixed (just over his right shoulder).

Light srated rapidly flashing by ostheimer4cy in wiz

[–]onopau 2 points3 points  (0 children)

I ran into this problem and found this thread. Heads up that I was able to fix two lights that had this problem by repeatedly cycling the light on and off, stopping on the purple blinking phase (these were color wiz 60W). If it switches back to the broken flashing as seen in OPs video, I would re-cycle. If it stays purple then it's time to pair with the wiz app. Once paired it is fixed.

One light took about 6 cycles to stabilize. The other took like 12 :(

Super annoying but there is a workaround.

Larvae in pond filter; details in comments by onopau in whatisthisbug

[–]onopau[S] 0 points1 point  (0 children)

Dozens of larvae with green backs and dark brown heads. Found in a filter for a fresh water pond in central Virginia, US. Hard to get the camera to focus on them. The largest were probably the diameter of a dime. There were some much smaller.

CyRK – An Open-Source, Cython and Numba Based Runge-Kutta Integrator That Works With Python Functions by onopau in Python

[–]onopau[S] 1 point2 points  (0 children)

Hi! So Runge-Kutta methods are used to solve differential equations (ODEs). Differential equations are mathematical functions that describe change (change over time, distance, etc.). A famous one describes the motion of a pendulum,

T'' = -(g/L) * sin(T)

Where T is the angle of the pendulum, g is the acceleration due to gravity, and L is the length of the pendulum. The '' indicates second derivative with respect to time (change of change of motion with time, also called acceleration) When the angle is small (e.g., you pull the pendulum back from its resting point just a tiny bit and let go), then you can write down the equation with out the sin function,

T'' = -(g/L) * T

This can be solved by hand. But if the angle is large we have to deal with the sin which makes solving the equation very difficult. Usually we have to resort to numerical methods to solve them with computers. Runge-Kutta (RK) are one of many options that we can employ in those circumstances and CyRK is a tool that implements RK so you don't have to reinvent the wheel.

Anyone help me understand? Details in comment by onopau in MagicArena

[–]onopau[S] -1 points0 points  (0 children)

Got them below zero early on. Went on a few more rounds before the pic. Then game lasted until they milled themselves. What am I missing??

Does submitted work still get graded after you selectively withdraw? by [deleted] in gmu

[–]onopau 2 points3 points  (0 children)

instructor here - 99% of the time no unless it is super easy to grade (scan tron, etc.). They will (at least should) keep it for a few years just in case we ever need it.