…brag about my estimation skills.
In deciding whether to go on an impromptu trip to Long Beach tomorrow, I wanted to calculate the costs of doing so. In the shower, I estimated that the round-trip distance is about 200 mi, the mpg of my car is 20 mi/gallon, and the gas that I recently filled my tank at with at Costco is about $4/gallon. 200/20 *4 = $40 for the round trip.
Verdict? Distance = 206 mi. Mpg = 20 mi/gal on average. Gas = $3.99/gal. Total cost: ~$41. I didn’t even need to find the exact values!
Now onto a skill I’m not so good at: DECIDING whether to go. ><
I die every time I look at lenses on Amazon. Omg, I. Want. These. Lenses. LENSESSSSS
Goal this summer: Using the money I earn from my summer job, get the 35mm f/1.8 & 55-300mm f/4.5-5.6 WITH VR .
Alternatively, get a camera with video recording abilities, or invest in a macro lens (but this can be done with a macro converter, so iono).
I’m drooling already.
P.S. looking at my pics now, the diffraction at small apertures (>= f/22) is really, really bad. More reason to want a sharper lens!
I ran out of project ideas. I always have a project idea. Then again, maybe I’m just really tired and burnt out right now; I do have project ideas, but nothing I feel like implementing, thus I don’t have any real project ideas. I’m gonna say that I’m in a state of stagnation right now. This has not really happened for a long time. I don’t know how to take it.
I need to follow more people on Tumblr and Twitter. I don’t get social media and I never will… it just feels so awkward (even creepy) following people you haven’t contacted in years. Or who you barely know. Then again I want my dashboard to consist of more than just gifs or fun trivia facts. But it’s so awkward. But I love reading people’s posts and ideas. It’s kinda like inception. Ideas beget ideas. I like that.
I gotta stop starting sentences with “I”. My composition is terrible with non-“formal” posts.
Things I should do/Project ideas that aren’t really project ideas but need to start getting implemented as project ideas
-Try out dropbox, and start a personal website (the two are somewhat connected)
-Start looking at GRE materials (lolz whoops)
-Do something with Python
-Finish processing pics from 124223560 years ago
this is actually kind of freaky =/
Sounds like brain damage + seizure, not alternate reality lol
She should prolly get that checked out though
![Another ESP did-you-kno moment for me - I pondered upon the same thing while I was waiting at the optometrist’s office the other day.
It’s actually really easy to prove. Consider the nth and the n+1th perfect square. Their difference is
(n+1)^2 - n^2 = n^2 + 2n + 1 - n^2 = 2n + 1.
What we see is that the difference between any two perfect squares is an odd number. To put it another way, to generate the next perfect square after the nth, we add 2n +1 (always an odd). So starting from the first perfect square, 1, we add an odd number to generate the next perfect square, then add the next odd number to generate the next, and so on. Hence the series of odd numbers generates perfect squares.
———-
P.S. just as interesting. The ratio of the n+1th perfect square to the nth perfect square is
[(n+1)/n]^2 = (1+ 1/n)^2.
For large n, this ratio approaches 1 — which means that (n+1)^2 asymptotically approaches n^2 for large n. In other words, since (n+1)^2 / n^2 -> 1, (n+1)^2 -> n^2.
Yet, if we take the difference of the two, 2n+1, that differences grows linearly with n, and eventually blows up to infinity.
The upshot is, at large n, (n+1)^2 -> n^2, but (n+1)^2 - n^2 -> infinity.
Like, WTF. Ponder that.](http://24.media.tumblr.com/tumblr_m4m6lyUgOD1qkvbwso1_500.png)
Another ESP did-you-kno moment for me - I pondered upon the same thing while I was waiting at the optometrist’s office the other day.
It’s actually really easy to prove. Consider the nth and the n+1th perfect square. Their difference is
(n+1)^2 - n^2 = n^2 + 2n + 1 - n^2 = 2n + 1.
What we see is that the difference between any two perfect squares is an odd number. To put it another way, to generate the next perfect square after the nth, we add 2n +1 (always an odd). So starting from the first perfect square, 1, we add an odd number to generate the next perfect square, then add the next odd number to generate the next, and so on. Hence the series of odd numbers generates perfect squares.
———-
P.S. just as interesting. The ratio of the n+1th perfect square to the nth perfect square is
[(n+1)/n]^2 = (1+ 1/n)^2.
For large n, this ratio approaches 1 — which means that (n+1)^2 asymptotically approaches n^2 for large n. In other words, since (n+1)^2 / n^2 -> 1, (n+1)^2 -> n^2.
Yet, if we take the difference of the two, 2n+1, that differences grows linearly with n, and eventually blows up to infinity.
The upshot is, at large n, (n+1)^2 -> n^2, but (n+1)^2 - n^2 -> infinity.
Like, WTF. Ponder that.
When I’m in the Bay Area, SD gets thunderstorms and not the Bay Area.
When I’m in SD, Bay Area gets thunderstorms and not SD.
When I’m in the Bay Area and Bay Area gets thunderstorms, I sleep through half of it.
Growl.
——-
PROOF:
There’s a chance of thunderstorms in the Bay Area tomorrow (I’m in SD now). During much of last fall and early winter (when I was in Berkeley), the storm track would bypass the Bay Area and weather systems, along with their thunderstorms, would slam into southern California. I will be back in Berkeley in early June and will stay there for the rest of the summer and on. From July to September, monsoonal flow favors southern California for thunderstorms.
Slinky is trying so hard
i just watched this entire video. what am i doing with my life.
YOU TRIED REALLY HARD
Why the hell did I watch this whole thing omg.
I don’t consider watching this a waste of time.
This is a physics problem worthy of my consideration to solve. Change to treadmill belt frame of reference. Find slinky CM speed (again in treadmill frame). I suspect that at some v_treadmill, slinky spring constant/mass, and initial conditions, we can make this oscillate almost indefinitely.
