and then he dropped it

[Huertecilla]

on the natural stone terrace. From about 1 meter he just let it slip to his fingers.

It hit the slab sapphire down making a rather flat dry sound and it did not bounce.
As the thing has a huge rimless window, there is no protecting bezel so.... :?

We both first just
Well, it´s only money, it can happen to anyone and he is just a kid admiring a watch.
Picked it up and... nóthing :bounce:
I had expected a crack, póssibly only a corner chipped, but no, nóthing.

Ok, that was a bit more than a bit of luck but still; it díd drop on a slab of rough granite so they must have done sómething right with the cristal and the bevelling on the SDGA00x.
No, the electronics and display were not upset either. As should be expected.

[LEDluvr]

Huertecilla- good thing that you were not hurt in this incident!
You could have very easily had a heart attack seeing that watch fall face down on granite!
Good thing both of you are a-ok. It appears you got your money's worth with this Seiko.

[rewolf]

So - after the sausage test, the legibilty test and the drop test - to what test are you going to put your Seiko next? Suggestion: I bet it won't survive a train rolling over it.

[Huertecilla]

:eek:
So - after the sausage test, the legibilty test and the drop test - to what test are you going to put your Seiko next? Suggestion: I bet it won't survive a train rolling over it.

You forgot one:



no, two:



and I bet it will take my proper 4x4 rolling over it

[Huertecilla]

I like quantifying things in order to be able to compare them.

The energy released upon hitting the slab was about 3,6 Joule.

1 Joule is:
# the kinetic energy of a 50 kg human moving very slowly (0.72 km/h)
# the kinetic energy of a tennis ball moving at 23 km/h

3,6 Joule is one of these

hitting your head at 20 km/h.

[rewolf]

Hm, if my calculations are correct, this would mean that the watch is quite heavy: 367g

Potential Energy is E = m * g * h, with g=9.81m/s², h=1m (in your case).

You can also calcultate it "the hard way": a free-falling object takes 0.45s to travel its first meter (t=sqrt(2s/g), s=1m, g=9.81m/s²); at this point it has a speed of 4.4m/s (v=g*t), that is, a kinetic energy of 0.5*m*(4.4m/s)². Insert m in kg and you have the energy in Joule.

[Huertecilla]

Hm, if my calculations are correct, this would mean that the watch is quite heavy: 367g

Potential Energy is E = m * g * h, with g=9.81m/s², h=1m (in your case).

You can also calcultate it "the hard way": a free-falling object takes 0.45s to travel its first meter (t=sqrt(2s/g), s=1m, g=9.81m/s²); at this point it has a speed of 4.4m/s (v=g*t), that is, a kinetic energy of 0.5*m*(4.4m/s)². Insert m in kg and you have the energy in Joule.

You are correct.
I went the classical (hard) way, put a division by 2 wrong and used the G = 10.
Serves me right to use the formulae from memory and do half the calculation by head
The weight is just under half that
Still a sturdy jolt.

[xevious]

Wow... what a heart skipper of an incident!

Man, either you got very lucky with the watch landing so perfectly flush to the ground that the energy distribution was enough not to cause damage, or, Seiko constructed this watch seriously well. Maybe a little of both happened. I wouldn't try this experiment again, though!

Congrats on your watch surviving, Huertecilla. I'll bet you will be a little more cautious about what flooring is around when you hand over your watch to someone.

[Huertecilla]

Congrats on your watch surviving, Huertecilla. I'll bet you will be a little more cautious about what flooring is around when you hand over your watch to someone.

Thanks but nâh...
Life is to be lived, not worried.