StringJunky

I meant within the metal itself but, yes, a variable thermal environment will likely loosen things in a structure.

I was just thinking of permanent effects TBH,

i don't think it will have any effect. It's not hot enough to affect its temper (hardness), if it has one, and it doesn't get cold quick enough (quenching) to affect it that way either,

Argument from incredulity. I have personally heard women say it on at least two occasions... as an identifier.

I was going to post this earlier but didn't, which aligns with your perception:

Yeah, even if I'd disagreed with him I'd have still plussed it. I like it because there's no SJW-whining undertones.

The 'truth' is what works for a given application.

Good, make it the beginning of his journey.

If it interests you, but I'm not going to first check someone's sexual history before I start reading up on quantum mechanics

We should just admire them for whatever they excelled in and leave the rest of their behaviour to the recycle bin of history; everybody's got skeletons.

I think there was a big dollop of sarcastic humour there.

No problem. If he was profoundly deaf then sign language is probably the way to go but I think him getting proficient in lip-reading would benefit him greatly and as long as he makes a point of saying to people that he needs to see their face when spoken to, he should interact quite smoothly with normal-hearing people as he matures. As he progresses, he should be able to seamlessly integrate the words that he sees in peoples mouths and expressions into sounds in his head, coupled with what he can hear... my brain actually seems to fill in the gaps I can't hear with sound... it's strange, but my brain definitely synthesises sounds and words in the gaps. My life has not been too bad socially in my adult years with respect to my disability and maybe your nephew can benefit from going in the same sort of direction. Given that he's four, I'm optimistic for him that medical progress will eventually give him unaided better hearing while he's still a young adult.

Hmm, a candidate ripe for the wrath of the MeToo movement then.

Ontologically, in physics, what a thing 'is' is its properties.

Note this is in the Relativity forum.

https://www.khanacademy.org

Hearing aids because I'd have been buggered without them. Second, the internet because I can drown myself in information.

Space is volume and volume is a property of things. Empty space does not exist as a distinct entity, just like 'length' doesn't. Vacuum energy is the lowest energy state a volume can have ( filled with virtual particles) but it's not zero i.e it is not 'nothing' or empty.

If you can, find him somebody who is proficient in lip-reading, which will fill in any gaps in what he can't hear. A teacher with that skill would be great. I had one. Given that he seems to have some hearing, like myself, i think he will find it a very useful tool when it gets a bit noisy and he'll pick up subtle cues about vocal inflection and how others are feeling through being able to read their faces. It will give him a better sense of empathy for people. Tonal inflection through hearing is beyond what a hearing-impaired person can pick up. Also notice that he will tire much more easily in a social situation because 'hearing' what a person is saying from deaf person's perspective requires a lot of conscious effort. It gets easier as one gets older.

Try erasers on pencils cut to the optimum shape, then clean with isopropyl alcohol-soaked cotton tips to remove eraser residue off contact surfaces.

You are thinking of radiation pressure where the pressure would be higher on the lighter side. The prevailing theory about this object seems to be that it is actually a comet and it is the outgassing as it neared the sun that caused the anomaly.

We need it because the adverts tell us we do and it drives the economy.

A freefalling person accelerates yet feels no force, therefore, it follows gravity is not a force; it''s curved spacetime. Don''t get hung up about not understanding it, scientists have been trying to nail it down for a long time without complete success; it still wont tie in nicely with the other forces.

If he has nerve-based deafness, cochlear to brain, there is as yet no on-stream surgical solution. Connecting individual nerves is still some way off. If it's the hearing bones, that can sometimes be fixed. Assuming he's getting the necessary medical attention, I would be paying particular attention to his communication and reading skills... help him find the best way that suits him to learn things and interact. Reading is very important because it may be his richest and most easily accessible resource for learning things throughout his life. Encourage him and get him comfortable with it; patient persistence. The internet is a godsend for deaf people, so teach him to use it to his best advantage.

It wants to wield the biggest stick.