I first considered just adding this to the mini-rants.
Then I gave some thought to posting to "stupid things you’ve heard’ over in MPSIMS.
After my mandatory 15 minute cool-down period I still needed to slap someone so here it is.
I was looking at ceiling fans tonight and wandered into the Troubleshooting Tips for Reiker ceiling fans.
[Quote=Tip Number 5]
If your room is cold soaked it will take longer to heat up because the walls, ceiling, and floors are all radiating cold energy and they need to heat up as well.
[/QUOTE]
Radiating cold energy?
Guess I’ll go out tomorrow and buy a microfreezer to set next to my microwave. It’ll be great to be able to beam cold energy into food I need to quick freeze.
Guess who I’m never buyng a ceiling fan from?
Feel free to comment on this or any other ludicrous statements you’ve seen on “professional” websites. (ie. Not something absurd a blogger has posted. That’s just shooting fish in a barrel.)
[QUOTE=elucidator]
Its not really that easy shooting fish in a barrel. Annoys the hell out of them, sure. Still, hard to actually hit them.
[/QUOTE]
I realize that “anecdote” does not equal “anecdata”, but I have to tell you a story
A buddy of mine back in college spent a few months in Guatemala (I think… somewhere down that-a-way…). He chewed coca leaves. He climbed in the Andes.
He brought back a gen-u-wine native-made blow-gun.
One night after an evening of severe debauchery, the guys he was with (I wasn’t there… this is all second-hand) wanted to see the blow-gun work. He dutifully loaded up a dart, took a big breath, and aimed at… err something or other.
An unlucky ricochet sent the dart into the fish tank, skewering some dude’s girlfriend’s favorite fish.
What has that to do with anything, you ask? Nothing, really… I just felt moved to share.
Wow, I didn’t realize the thread I was thinking of was over a year ago, but the OP reminded me of this post in a thread asking why sheets feel cooler than the room:
[QUOTE=kanicbird]
I was simplifying, but it is radiation which is the difference. The sheet is radiating to the ceiling and the ceiling to the bed. There is net heat transfer from the sheet to the ceiling since the bed is warmer and will radiate more.
Lack of heat can and does act as a sink for radiation.
[/QUOTE]
Perhaps Reiker was just simplifying for the layman?
[QUOTE=Astroboy14]
I realize that “anecdote” does not equal “anecdata”, but I have to tell you a story
A buddy of mine back in college spent a few months in Guatemala (I think… somewhere down that-a-way…). He chewed coca leaves. He climbed in the Andes.
He brought back a gen-u-wine native-made blow-gun.
One night after an evening of severe debauchery, the guys he was with (I wasn’t there… this is all second-hand) wanted to see the blow-gun work. He dutifully loaded up a dart, took a big breath, and aimed at… err something or other.
An unlucky ricochet sent the dart into the fish tank, skewering some dude’s girlfriend’s favorite fish.
What has that to do with anything, you ask? Nothing, really… I just felt moved to share.
[/QUOTE]
[QUOTE=elucidator]
Its not really that easy shooting fish in a barrel. Annoys the hell out of them, sure. Still, hard to actually hit them.
[/QUOTE]
You must be doing it wrong. The first shot puts a hole in the barrel. Then the water leaks out. Dead fish at the bottom of a barrel are easy to hit. But you have to scrape the bottom of the barrel.
In an interesting twist, the amount of time it takes for a barrel of water to be emptied through a bullet hole is equal to the amount of time it takes cold energy to leave a room.
This doesn’t bother me that much. The fact is, if the walls are cold, there is a net radiative heat transfer from your body to the walls. “Cold energy” isn’t a very good way to dumb it down, but I’d give it a benefit of doubt and assume it’s trying to say “if the walls are cold, the room would feel colder than you’d expect from the air temperature,” which is true.
[QUOTE=scr4]
This doesn’t bother me that much. The fact is, if the walls are cold, there is a net radiative heat transfer from your body to the walls.
[/QUOTE]
But they’re saying it is going from the walls to you. Not nearly the same thing.
[QUOTE=Sophistry and Illusion]
But whose was it? The military’s? How’d they let you use it? Or can John Q. Citizen buy one?
[/QUOTE]
It was mounted on top of a response vehicle for PTLA (Protection Technologies of Los Alamos), the people responsible for securing the Labs. I kind of cheated. It wasn’t loaded, and I didn’t shoot it. It was part of their display booth at the Labs’ student picnic. They also had a lot of their other gear on display, including RPGs.
Although JQC can’t buy one, I can’t imagine it being too hard for Mythbusters to find a class 3 dealer (or whatever qualification is required to obtain one) that would allow them to use it for shooting an episode (no pun intended). Especially since Mythbusters most likely gave them credit for it at the end. I’m guessing it would have been a company that armors vehicles for people, while trying to keep the appearance of stock on the outside.
[QUOTE=Lok]
The one you are shooting didn’t pop up out of the top of an SUV!
[/QUOTE]
[QUOTE=scr4]
This doesn’t bother me that much. The fact is, if the walls are cold, there is a net radiative heat transfer from your body to the walls. “Cold energy” isn’t a very good way to dumb it down, but I’d give it a benefit of doubt and assume it’s trying to say “if the walls are cold, the room would feel colder than you’d expect from the air temperature,” which is true.
[/QUOTE]
Exactly. The transfer is from your body to the wall. Radiating from you to the wall. Not the wall radiating cold into your body.
The room is colder because the walls are absorbing radiant heat energy, they’re not radiating anything.
ETA: Can we please move the mythbuster/fish in barrel hijack to it’s own thread? Thanks.
