There's basically no straightforward solution without specifying punctual conditions as the spacetime reference frames differ in so many ways. General relativity is a bitch.

I just wanted to point out that sensitivities differ among cultures while adding some spice which is probably wasted on most.

Imagine that showing your hair in public were an offense.

Oh sorry, shouldn't have used the irrealis 'were' where it's a real offense in some places.

Try the following: at a very quiet time, "think back hard" for a minute the same tone(s) you are hearing as if you would sing/whistle without actually doing so. 9kHz is high, so you may need to stepwise think one or more octaves (frequency doublings) up to get at the correct frequency. If it works the tinnitus will gradually fade while "thinking" and slowly come back to a lower level after. Repeat as required until all tones are completely gone.

If your tinnitus is noise instead of / in addition to tone(s) this becomes much more difficult as you would need to think a matching noise spectrum. Luckily noise is less of a burden than tones.

I found this method by seripendity during a sudden hearing loss episode.

Tried to explain it to friends and family, but most seem to prefer self pity over a bit of effort and experimentation.

YMMV.

Call back when you're 64.

and insert characters under mask. //DD ...

We haven't seen the end of this yet.

but won't.

Despite understanding physics I find the difference between surface movement and drilling down quite unintuitive.

After all, 10km is a small distance on the surface which can be travelled easily on a daily basis, while drilling, diving, or even climbing the same distance is beyond comparison.

Gravity, while a very weak force as forces go, is a bitch.

Oh, forgot Sony Vaio VPC-F12M1E from 2010 that's still occasionally used. Received a SSD and new battery though.

2013 - 2022
Intel i7 3930K 6 core / 12 threads
Asrock X79 Extreme6
32GB RAM Kingston HyperX LE
Samsung 840 Pro 512GB SSD
2x 3T HD mirrored Seagate Barracuda ST3000DM01 (in Raid 1 mirror)
GTX770 4GB
W10 Pro
750W PS
Heavily used, kept on 24/7

Very decent specs for that time and there was still no pressing need to replace for capacity or performance until it started crashing more and more frequently with random stopcode. Replaced RAM and PS without effect and gave
up.

Built new one with i9-12900F keeping only HDs (!) and cloning boot SSD to 4G keeping the OS after struggling with UEFI. This one sleeps at night to lower energy costs.

Dark matter isn't matter but rather a field D associated with the gravity field G analogous to how the magnetic field H and the electrical field E are bound.

There are 4 fundamental laws.

The first states that the divergence of G equals the mass density divided by gamma where gamma is the gravitational constant (better known as G). This is the universal law of gravity as discovered by Newton.

The second states that the divergence of D is zero; looking for dark matter monopoles is futile.

The third states that a changing field D creates a gravity field G. A changing D may have been observed indirectly in galaxies where the gravitational field is larger than explained by the mass density and the first law alone.

The fourth that a changing gravity field or a mass stream create a field D proportional to gamma, another nature constant (*). These conditions can be found when black holes circle each other (creating a changing gravitational field) or whenever mass is moving. An accelerating mass creates a changing field D which in turn creates a field G acting as a drag = inertia.

Gravity waves are composed of orthogonally changing D and G fields. The force carrier is the massless graviton which moves at c.

(*) sqrt(gamma.delta) = c

You read it here first. Call me when the Nobel prize is awarded :-)

"America is an empire"

That explains the empirical units instead of logical ones.

You mispelled 'tortoise'.

The Latin expression for age was "annum agens xx" where the indicated age counted the current year as a full year. By current western standards that person would be xix years old.