Im a BM★★★★★
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GasGuzzler wrote:
Into the Night wrote:
GasGuzzler wrote:
I've learned so much on this site and again, thanks guys for sharing all your knowledge.
Thanks for being receptive to it!
GasGuzzler wrote:
My kid asked me a question the other day, but not sure I answered correctly.
"Dad, I know you cannot increase temperature without additional energy. How is it possible to have two identical items sitting in the sun and one is much hotter than the other because it was black. There is no additional energy.
I answered that the additional energy was the amount of energy the black object absorbed, rather than the amount of energy available to both objects.
You answered correctly.
Both objects are absorbing infrared light from the Sun and converting that to thermal energy. The photons are, of course, destroyed.
Emissivity (which is also absorbtivity) is greater for the black object (usually). The reason a white object is white is because it reflects more light (to you). The reason a black object is black is because it reflects less light (to you).
If you know the temperature of a surface, you can calculate what the emissivity is by comparing it to the ideal black body, an ideally perfect absorber (and emitter).
At night, of course, the black object also loses more energy (it is a better emitter too!) so that both objects are the same temperature the next morning.
GasGuzzler wrote:
He said that makes sense. Then he called me a racist.
Odd. I guess he figures that the Stefan-Boltzmann law is somehow 'racist' now?
GasGuzzler wrote:
Did I answer correctly?
Yes.
GasGuzzler wrote:
Or is there a better SIMPLE way to articulate?
I would say you did.
GasGuzzler wrote:
For some reason I'm not sure of myself.
His response has nothing to do with what you said. He is pivoting to racism, which is a fallacy.
GasGuzzler wrote:
Last thing I want to do is send him out into the world fighting battles because of his climate sins and defending himself with misinformation.
Apparently he has already enjoined the various religions of the Democrats. It looks like he WANTS misinformation. Rest assured, it didn't come from you.
GasGuzzler wrote:
Thanks!
Good luck with your kid. These are fundamentalist style religions. It is rather difficult to extricate someone from them. Don't give up hope though! It has been done.
Refer him to this forum. He might learn, just as you did.
Heh! I think you misunderstood. One of his best friends is black. Him, my son, and another are becoming quite the ski bums. They literally spend entire weekends together snowboarding and hurling racist jokes. Anytime I say the word 'black' I'm immediately called out for it. It's all in fun and dimishes all the BS cries of racism in our society today.
On Saturday he sent me a text...
Him-Dad, Grant pushed me off a cliff. I'm OK.
Me-Did you deserve it?
Him-NO! It was racially motivated!
LMAO!!!!
The boy will be just fine. He actively engages in arguments in class. Some teachers encourage it, others try to shut him down after letting another student spew climate change BS. In fact he got sent to the office last week for continuing to talk in one such argument after the teacher said it "was enough". I am proud of him.
Greetings Gas Guzzler!
You started this thread just a couple of months before I began posting at this website, four and a half years ago.
Four and a half years later, I am very curious to know what became of this.
Does your son continue to engage in debate with others who "spew climate change BS"?
Did your son carry these teachings with him to college?
Do you and your son continue to discuss thermodynamics?
Did your son choose a path of activism around these issues?
Is he a chip off the old block somewhere, perhaps on an Internet discussion site, refusing to back down in the face of "climate change BS"?
Did he modify the thermodynamics explanation in any way, or is it the same one offered to you here by IBdaMann, Into the Night, and gfm7175?
I am dying of curiosity to know the status of your relationship with your son and your shared mission to confront those who "spew climate change BS".
Sometimes after kids go off to college, the rebel and reject their parents' value system. Maybe even join some kind of wacky cult. Get hooked on drugs. Discover their true identity as a trans sexual.. Have their first big psychotic break and psychotic episode.. Get a girl pregnant, get married/divorced...
A LOT can happen to a kid in four and a half years.
Hopefully he is your loyal buddy still, and you have taken your discussions of thermodynamics to the next level. |