My act was posting this explanation for Beckdawrek.
You are my hero.
Now, can you insert a little Music Appreciation and play them a little Mozart/Bach piece? ![]()
Thank you. I figure it only takes a few minutes three times a week for the garbage cans, and I’d bring in the mail anyway. I have to be nice to old people; I intend to be one someday.
learning to tie paracord ‘stuff’ - saw a set of handles someone was selling for the jeep - decided to make them myself.
This may be good math (and pedagogy), but it’s bad physics. Decibels are logarithmic, so 10% louder than 115 dB would not be 126.5 dB (the result I assume they’re supposed to reach) but about 116 dB, according to (my interpretation of) this source. An engineer with a better technical background may be along to correct my math, but I don’t think I’m very far off, and I’m quite sure the answer isn’t close to 126.5. Acoustics and the physics of sound are very complicated.
So even though it’s a fun inside joke, I suggest you find an example that doesn’t inadvertently teach incorrect physics.
I had a Terminator 2 moment driving late at night a couple of weekends ago; my wife was driving us up I-95 through South Carolina and I was asleep in the passenger seat. I was just waking up and I immediately told her to slow down, there was a cop right behind us. She didn’t believe me, but I insisted and she slowed down, and moments later a sheriff’s cruiser zoomed past us. “How did you know?” she asked, and I looked at her side-eyed and replied, “I see everything.”
Thanks so much.
Earlier this year I bought the Audubon Bird of the Day Calendar. For the first few days, after tearing off the previous days’ bird, I would chuck it in the garbage. Then I decided to memorize the whole thing so now I take yesterdays bird and stick it in a door frame. Once a day I go through the whole list and repeat every bird.
Coolest ones so far are the Chestnut-Eared Aracari and Whitehead’s Broadbill.
Fun and good for the brain!
Just curious about this… I thought that stuff had to sit for years. How did you get it so tasty in just a few months?
Sigh… you’re right, of course. This isn’t the first time I’ve come up with some clever example without thinking it fully through. I really should have, considering that I have an example involving decibels that I regularly do in my college algebra classes when I’m teaching logarithms.
Or, “Lick My Love Pump”.
Sorry to be the spoilsport. ![]()
I wasn’t the perpetrator of this, I was in the truck at the scene. Me and Mr.Wrekker were driving through a medium sized town. We pull up to a intersection, 4 lane (busy) state highway crosses a busy 2 lane.
Right in the middle under the traffic light was an open, bright yellow umbrella. It was windy today, so the umbrella was rocking and scooting around a bit. Causing all matter of confusion and alarm. Mr.Wrekker pulled over to the shoulder, jumped out of the truck. Threw his hands up like Moses parting the Red Sea, traffic came to complete stop. He quickly grabbed the offending object, closed it & walked over and tossed it his truck bed. By the time he was getting in the truck all cars in the vicinity started beep their horns. He started the truck and we drove off. He never said a word or explained himself. My mouth was just hanging open looking at him.
Dyed my hair a deep, dark, purple-red color. It looks really cool. It’s totally insignificant, except that I love it.
Taught my gf how to drive a car with hand controls. Totally insignificant because she’s not legally licensed to drive with her hands and most importantly, she doesn’t need to. But still, kinda neat.
I played Deja Vu for awhile on a System 6 Mac SE by remoting into it from my MacBook. Got the amnesia guy into the elevator, then saved the game for later additional play.
Bels are Linear in loudness. That’s why we use Bels instead of Amplitude or Power. 11 Bels is 10% louder than 10 Bels. 12.65 deciBels is 10% louder than 115 deciBels
Bels (after Alexander Graham Bell) are logarithmic to power or amplitude because Loudness is logarithmic because Hearing is logarithmic.
You can hear really quiet noises, and really load noises, because your hearing uses logarithmic compression of noise amplitude.
We often hear about how you can see in really low light, and see in really bright light, but we less often see how hearing works: it too has a wide range of sensitivity.
I make no statement about how linear your hearing is in dB. But it’s not logarithmic in dB: it’s logarithmic in power. That’s why we use a dB scale for loudness.
I got a county commissioner on the phone tonight and had a discussion on an upcoming vote.
I thought it was cool. Him, maybe not so much. 
I had another cool moment last night: same class, same student. Just before it happened, the thought that flashed through my head was “he understood a Spinal Tap reference, therefore he’ll probably get a Monty Python reference.” If not for that, I probably wouldn’t have said it.
Anyway, the topic was permutations and combinations, and the example was “How many 5-card hands from a standard deck contain 3 diamonds?” I started the problem, and the student raised his hand and asked if this meant hands with four or five diamonds qualify. I conceded that the question wasn’t well written, that I need to change the wording to “exactly three diamonds.”
I started to turn back to the board when I was suddenly inspired. I turned back and said “three shall be the number of the diamonds, and the number of the diamonds shall be three. No more, no less. Five is right out.” (I know, I left part of the quote out.)
The student chuckled, and a couple of others smiled. Most of the rest of them were looking at me like they wanted to ask WTF I was on about.
There’s a British quiz show called Only Connect. Part of the game involves showing the contestants a list of (up to) three things, and they have to figure out what is the fourth item in the sequence. Of course, there are more points if you can figure it out sooner.
You might enjoy this clip.