What time is it? Watches and horology

Good one, I just tried that and it does make a difference.

Thanks!

This version of the Everest is firmly in the category of watches that I really like the look of but wouldn't buy or wear. Just not for me.

Somehow I failed to notice that in the first photo. Yes, the other way is definitely correct.

How about the white-dial ‘Explorer’?

Why hasn't that minute hand moved in the 5 second exposure?

non hacking seconds? so other hands stopped but seconds moving? (nb: I am not certain this is how it works - but someone will be...)

but also Miyota 9015 hacks afaik

Not how hacking works. Minutes would continue but not seconds. I am not sure a minute hand moves enough in five seconds to be captured in a 5 second exposure properly?

Yeah maybe 5 secs is just not really long enough to see it move.

360/60 is 6 degrees per minute.

6/60 is 0.1 degrees per second.

So 5 secs is half a degree...

or half of this...

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Neither the minute or the second hand progresses in a constant sweep in a mechanical watch (as compared to a spring drive).

The Smiths is a 28,800 bph watch, meaning the second hand ticks 8 times per second, and progresses 0.75 degress per tick.

I'm not sure if this is correct, but does the minute hand progress at the same degrees as the second hand in an automatic watch? If so, it would progress at 8 ticks per minute, 0.75 degrees per tick, at an interval of once every 7.5 seconds. So in the photo of the Smiths watch, the minute hand wouldn't have progressed at all over a five second interval.

Or is this completely wrong?

This escalated quickly.

No. There’s only one escapement. The seconds, minute and hour hands all progress the same number of times per second, but by smaller amounts because gearing.

Belated / Early Friday watch post...

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I suspected my almost nil understanding of movements would be exposed! Is there an idiots guide somewhere?

I had forgotten how bright the lume on this is. Might have to be my Friday watch.

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How dare you submerge a watch built for submersion!

Home from the pub early first Friday watch.

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Fuck it... Fun Friday can happen next week...

LUME

*I'm being beat by images... Fuck sakes... Actually fuck this shit

Haven’t worn this in a while.

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Dunno, you’d think there must be, especially on YouTube. I’ll have a look later.

It’s not that complicated (a coiled mainspring unwinds, driving a gear train that moves the hands at the appropriate relative gearing) apart from the escapement and balance wheel.

https://en.m.wikipedia.org/wiki/File:Paletteankerhemmung.gif

The power from the mainspring is coming through the escapement wheel at the bottom. As it turns it hits the “pallet” jewel bit on the lever which pushes the balance wheel (connected to the top part, like this) and the escapement wheel then gets locked in place by the other arm of the lever. When the balance wheel swings back the other way (thanks to the balance spring coiling and uncoiling) it knocks the lever back again and allows the escapement wheel to unwind a step, at which point it knocks the lever forward again, etc.

So the escapement wheel is transferring power to keep the balance oscillating and the inherent oscillation rate of the balance wheel and spring is what controls the rate of the escapement wheel progressing.

The more consistent you can make the balance wheel/spring oscillation, the more accurate the movement.

Dunno if that makes sense?

Also:

Not how hacking works. Minutes would continue but not seconds.

That's not how hacking works either. The entire movement is stopped by applying a brake to the balance wheel. The minutes/hours don't continue to run.

Not wearing either today but to continue the theme here’s a lume comparison between the OP and SBDC065...

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And here it is in daylight.

40mm version, #49, on a CUDA natural rubber strap which still smells of cocoa butter after seven years.

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Bought to soften the blow of selling the GMT - much better than I thought it would be in real life.

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Dive watch Friday I guess. I put the Squale back on leather for a change.

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