#PhysicsQuestion: in "A Brief History of Time," Hawking describes how matter particles emit force particles, the recoil changing their directory and the impact changing their target's. This makes sense for repulsive forces, but how does that translate to attractive forces?

#ParticlePhysics #physics #gravity #magnetics #science #ScienceQuestion #ScienceQuestions

What's the science of why some materials feel warmer? Can anyone offer, or direct me to, an explanation that a ding dong could enjoyably comprehend?

#scienceQuestion

Thanks to everyone for voting in our RoofQuotes.com #WeatherQuestion / #ScienceQuestion of the day. Majority of votes for the correct answer.

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#ScienceRules: Tuesday's RoofQuotes.com #WeatherQuestion #WeatherPoll #ScienceQuestion of the day: where is the @noaa #OceanExplorer ship Okeanos exploring today?

Learn more about NOAA Ocean Exploration and see video from the latest expedition:

https://oceanexplorer.noaa.gov/livestreams/welcome.html

Vote now in our @WDEFNews12 @Beltone #WeatherQuestion / #ScienceQuestion Of The Day at wdef.com/votenow.

Answer coming up on #PrimeNewsAt7

This is an example of a thing I would have shown to my dad and we would have spent hours talking about the implications and implementations of the technology.

https://m.youtube.com/watch?v=EmKQsSDlaa4

-Would it be possible to have a curved recording slide?
-Could you use the 2d recording as a way to reduce data for transmission. Similar to a Fourier transform, or zip file?
-could you get a high enough resolution to reproduce this effect digitally? What would the scale be?
-Could motion independent of observer angle be possible?
-What would use cases be?

Feel free to boost. If you have any suggestions for more hashtags that would get this to the right circles let me know.

#sciencequestion #mathquestion

Which physical constant is the most fine-tuned for our existence?

(in the sense that by changing it a small amount would prevent the existence of (intelligent/advanced/eucaryotic/whatever) life, but otherwise leave the universe mostly unchanged)

#Fediscience #Astrodon #physics #astrobiology #sciencequestion

Is there a substance that's harmful to metal but not to people or animals? Google is failing me.

Edited to add: Not oxygen or salt, sorry. Looking for something more immediately harmful.

#Science #Question #ScienceQuestion

it's really cold in the PNW so indoor heated air is *REALLY* dry. I have a couple of those #ultrasonic #humidifier mist #diffuser thingies but stopped using them after I heard they put dangerous micro mineral particles in the air.

Does anyone know if this #danger is real? I understand the EPA hasn't said they're unsafe, but, y'know.

#humidity #airquality #airsafety #particulates #sciencequestion