What do you know today that you didn't know yesterday?

[*Deidre*]

That I would be eating Italian for dinner tonight.

[arewethereyet]

Super exciting Amazon delivery today...large bag of dog food. New foraging wall for the African Grey. And new rope thing for Quaker parrot. The Quaker is so far most impressed. He likes rope and twine as he weaves is in and out of his cage bars and sometimes makes his own perches. It's been a while since he got a new rope.

In other news...the badly in need of a spaying puppy is fiercely humping the poor old (long fixed) male cat. Blue is currently looking for a place to hide from Harley's amorous advances.

[arewethereyet]

^ooops, wrong thread most likely. Though I did find out that particular kind of rope seems to please Zeus.

[Bucky Ball]

I learned in the last few months, it pays to be a bitch. 
I do some Cardiology "data collection" on the side, and there are nurse Coordinators that think I'm a pushover. 
In a meeting this week, I said I was taking a vacation, and wasn't sure I would continue in the role. 
There is no one to replace me. The Chairman of the Dept called me at home and asked if I would continue. 
I said I would consider it. He and my dad are good friends. I know I have to be careful, but the data I get and present  is impeccable, proven by years of audits. 
I think I can do with less stress. I may actually resign. On the other hand I have invested so much, I still care about our reputation. 
Oh well. Life goes on.

[polymath257]

Wrong

DBs are multiplicative, in that they provide a multiplicative scale for numbers.

Adding DBs equals MULTIPLYING values.
Example: +20db = x 10, +40db = 10 x 10 = 100, +60Db = 10 x 10 x 10 = 1000, -20db = 1/10, etc

Thus the machine with +20db more noise level is TEN times louder than the other*. APPROXIMATELY the 100db machine is dominant (assuming the sound waves do not create interference, cancel each other out n stuff. Lets not go down that rabbi thole today), because the total air pressure is only x1,1 of the dominant one.

That way you can easily display wide ranges of numbers in plots, or display certain behaviours that are multiplicative, making them look "Linear" in the "multiplicative realm" of DBs.

*in terms of air pressure..... but heres the catch: With +20db the air pressure is TEN times more, but human ears work in a LOGARITHMIC scale, just like DBs and we have subjectively linear perception according to a db scale! That way we can distinguish between a sound of  a fly and a starting 747 next to us, two sound events separated by 10^12 in terms of sound pressure. We dont perceive the plane being gazillions of times louder, but only tousands of times, according to the multiplicative perception we have. We kinda perceive an event with 60+db (compared to another), which is x1000 times louder, in fact like 3x (+20db) louder.

According to my sound meter, my shop vac/dust extractor runs at 80dB, my table saw at 105dB. When I run both together, I get a reading of 105dB.

Am I looking at this wrong?

Boru

No, but the 105dB is about 300 times as loud as the 80dB. So, when you add, that is a total of about 301 times the 80dB item, which is still about 105dB (within a margin or error).

[BrianSoddingBoru4]

Molten lead is not hot enough to set fire to a wool jumper.*

Boru 

*Please do not reply to this with long, discursive lessons on metallurgy, thermodynamics, or the textile industry.

Boru

[Gawdzilla Sama]

Molten lead is not hot enough to set fire to a wool jumper.*

Boru 

*Please do not reply to this with long, discursive lessons on metallurgy, thermodynamics, or the textile industry.

Boru

That doesn't explain all the flaming sheep on Mt. Etna.

[BrianSoddingBoru4]

Molten lead is not hot enough to set fire to a wool jumper.*

Boru 

*Please do not reply to this with long, discursive lessons on metallurgy, thermodynamics, or the textile industry.

Boru

That doesn't explain all the flaming sheep on Mt. Etna.

It’s not meant to (unless volcanoes erupt molten lead).

Boru

[Anomalocaris]

Molten lead is not hot enough to set fire to a wool jumper.*

Boru 

*Please do not reply to this with long, discursive lessons on metallurgy, thermodynamics, or the textile industry.

Boru

That doesn't explain all the flaming sheep on Mt. Etna.

Fresh lava from most volcanos on earth are much hotter than melting point of lead, and in some cases approach melting point of steel.

If normal rock melt at similar temperature as lead then the surface of Venus would be one giant ocean of lava.

[BrianSoddingBoru4]

Moe Howard, of Three Stooges fame, was married to Harry Houdini’s cousin.

Boru