Science: Vaccines Work, GMOs Are Safe, Everything is a Chemical

[walrus]

FreshFish-I asked a solar guy.

First, if the shingles are close to replacement, replace them. Second, it costs $500 to take the solar down and reinstall when you get a new roof.

Bull **** on the 500 bucks

[walrus]

Re: Science: Vaccines Work, GMOs Are Safe, Everything is a Chemical

If I were an inventor, I'd find a way to embed solar fibers into roofing shingles (sort of like how one can now put an electric heating grid under a tile floor before they lay down the tile above it, but flip-flopped). Then, every time a person needs a new roof, they can get a two-fer quite easily; you only have to hire one crew once instead of two¹.

It seems to me a mis-use of solar to link it to a national grid at all. I'd think a localized mix of whatever works best in a certain area would make more sense. Every building have its own solar for its own use, with the excess shared / stored locally. Having too widespread a grid tied into all sorts of different generating technologies risks kluge effects that we might never unwind, and it also is a serious threat to national security.




¹ When people have solar panels on top of their roofing shingles, what do they do when it comes time to replace the shingles? Do they have to disconnect the panels and remove them, replace the roof, and then put them back up? Somehow that detail never makes it into the sales literature....

You need to do the math if you think solar can be everything to everyone. If Musk can come up with the battery pack he has talked about at the price point he talked about then maybe you can do your own thing off grid. Doing grid tied means your neighbor is paying for the lines coming down the street but you don't as your usage off the grid is minimal. Having tons of people with grid tied systems makes it hard to balance what generating plants need to be online and when they need to be online. On the other hand have grid tied panels when there is a heat wave puts valuable juice into the grid when it really needs it.

there are already roofing systems with solar built in. Not sure how they work. I believe they are less efficient than good panels

[mookie1995]

Re: Science: Vaccines Work, GMOs Are Safe, Everything is a Chemical

question for science peeps

at the end of independence day 1, will sets off that nuke in the mother ship and escapes, only to have to fly out of the explosive cloud.
so....
how does that cloud exist?

doesn't fire need oxygen?
isn't there NO oxygen IN space?

does a nuke create oxygen? through atom deconstruction?

always confused mookie.

thanks for your expert replies

[joecct]

Re: Science: Vaccines Work, GMOs Are Safe, Everything is a Chemical

question for science peeps

at the end of independence day 1, will sets off that nuke in the mother ship and escapes, only to have to fly out of the explosive cloud.
so....
how does that cloud exist?

doesn't fire need oxygen?
isn't there NO oxygen IN space?

does a nuke create oxygen? through atom deconstruction?

always confused mookie.

thanks for your expert replies

There was a debris field - that was a pretty big ship. But how do you show a debris field in space? So they did, IMO, stretch the science.

[mookie1995]

Re: Science: Vaccines Work, GMOs Are Safe, Everything is a Chemical

There was a debris field - that was a pretty big ship. But how do you show a debris field in space? So they did, IMO, stretch the science.

so is it on fire? burning out of control?

[joecct]

Re: Science: Vaccines Work, GMOs Are Safe, Everything is a Chemical

so is it on fire? burning out of control?

The blast would generate heat. Something will glow with the heat, but did the atmosphere on the mother ship (if there was one) support combustion? And will the atmosphere expand to support any combustion? Got me.

In SciFi, the standard way to end a fire on a spaceship is to dump the air in the compartment(s) to space. That will put out the fire (unless it is electrical).

[mookie1995]

Re: Science: Vaccines Work, GMOs Are Safe, Everything is a Chemical

The blast would generate heat. Something will glow with the heat, but did the atmosphere on the mother ship (if there was one) support combustion? And will the atmosphere expand to support any combustion? Got me.

In SciFi, the standard way to end a fire on a spaceship is to dump the air in the compartment(s) to space. That will put out the fire (unless it is electrical).

well they did use air as we know it, so a healthy majority mix of oxygen and nitrogen i recall.

the exploded field, that wouldn't have any acceleration (or increase in velocity)? would it?
the explosion would set it on a course and with no gravity or friction it would continue at the original speed until it reached earth's (or another planets) atmosphere.

so in theory with the spacecraft at max speed (couple times speed of light?). how fast would an atomic explosion initially propel shrapnel?

[joecct]

well they did use air as we know it, so a healthy majority mix of oxygen and nitrogen i recall.

the exploded field, that wouldn't have any acceleration (or increase in velocity)? would it?
the explosion would set it on a course and with no gravity or friction it would continue at the original speed until it reached earth's (or another planets) atmosphere.

so in theory with the spacecraft at max speed (couple times speed of light?). how fast would an atomic explosion initially propel shrapnel?

At 2c you'd be past the moon in 1 second. And movies forget that in order to slow down your have to decelerate in order to stop. That takes time, too. There are no disk brakes according to Newton.

[Kepler]

Re: Science: Vaccines Work, GMOs Are Safe, Everything is a Chemical

At 2c you'd be past the moon in 1 second. And movies forget that in order to slow down your have to deaccellerate at the in order to stop. That takes time, too. There are no disk brakes according to Newton.

Are we talking about the aliens? Because if they got here they have FTL, and that opens the door to any pretend nonsense they want.

[mookie1995]

Re: Science: Vaccines Work, GMOs Are Safe, Everything is a Chemical

Are we talking about the aliens? Because if they got here they have FTL, and that opens the door to any pretend nonsense they want.

will smith was flying their spacecraft, so yah mookie guesses he is talking that.

[LynahFan]

Re: Science: Vaccines Work, GMOs Are Safe, Everything is a Chemical

Bull **** on the 500 bucks

Amen. You can't get a contractor to step foot on your property for $500.

[walrus]

Re: Science: Vaccines Work, GMOs Are Safe, Everything is a Chemical

Amen. You can't get a contractor to step foot on your property for $500.

I'll step on it for 500 but I aint taking 20 panels off it, all the wiring, the racking system which are lag bolted to rafters, getting off and then put it all back up. Especially on a new roof where every step is going to leave a mark for some homeowner to whine about( which is why I don't work for residential customers). Its worse than a new install as you had to take it off also.

[busterman62]

Re: Science: Vaccines Work, GMOs Are Safe, Everything is a Chemical

Fascinating piece on decoherence and the arrow of time.

Wow! Great article. If you didn't read this, you should. If you want the Cliff Notes version: Entropy Rules

It's been 30+ years since I've read more than a blurb about quantum mechanics but the author made most if not all of it fathomable. I'm always in awe of people who can take a complex idea and make it understandable by those who aren't well versed in the principles involved. I strive to do that daily in my job.

[Kepler]

Re: Science: Vaccines Work, GMOs Are Safe, Everything is a Chemical

"Smaller molecules"

[joecct]

Re: Science: Vaccines Work, GMOs Are Safe, Everything is a Chemical

Stuff on Pluto (some math)

https://blogs.nasa.gov/pluto/?s=