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V1Rotate · 10 August 2015, 02:34 AM

I've always worn my sub date and GMT Master II swimming whether in a pool, snorkling or non wetsuit diving... hundreds of times needless to say. Being watch guys (and gals), I know we have all visually admired our beauties underwater appreciating the distortions and whatnot. What I noticed today oddly enough for the first time is underwater, the magnified date loses its magnifying properties. Any optic professionals know why this happens? One would think the magnifying properties of water + the date bubble would equal a bigger positive, but it appears to cancel everything out.

sickened1 · 10 August 2015, 03:00 AM

Date Magnifier Under Water.

LuminousMaximus · 10 August 2015, 04:49 AM

Nice observation. I wonder if it's the same in salt water as it in in fresh water. Mm. Better schedule a trip to Hawaii

HogwldFLTR · 10 August 2015, 05:09 AM

The refractive index for H2O and Sapphire or glass are almost the same where as air is quite a bit different (for example 1.4 for glass and water and 1.0 for air) so by removing the air in the model the light is no longer refracted and there is no longer magnification.

https://en.wikipedia.org/wiki/Refractive_index

Onikage · 10 August 2015, 05:22 AM

The cyclops loses its convex shape and magnifying properties as the surrounding void is filled with water.

V1Rotate · 10 August 2015, 10:06 AM

Works for me! Thanks for the education!

AS1 · 10 August 2015, 10:07 AM

This was part of the Rolex strategy for the new smaller cyclops mag... to more closely replicate an authentic underwater tool watch experience

THC · 10 August 2015, 10:10 AM

Everything shrinks in cold water...

Snow-Dweller · 10 August 2015, 10:14 AM

Quote:

Originally Posted by THC

Everything shrinks in cold water...

Hahaha!

Tseg · 10 August 2015, 10:19 AM

No wonder my BLNR had had a small magnified date all this time... must be the result of my drool every time I look at my watch.

brandrea · 10 August 2015, 10:34 AM

Quote:

Originally Posted by sickened1

Date Magnifier Under Water.

10 August 2015, 02:34 AM	#1
V1Rotate "TRF" Member Join Date: Dec 2013 Location: @Boston Watch: 16660 16613 16710 Posts: 278	Interesting observation...But why? I've always worn my sub date and GMT Master II swimming whether in a pool, snorkling or non wetsuit diving... hundreds of times needless to say. Being watch guys (and gals), I know we have all visually admired our beauties underwater appreciating the distortions and whatnot. What I noticed today oddly enough for the first time is underwater, the magnified date loses its magnifying properties. Any optic professionals know why this happens? One would think the magnifying properties of water + the date bubble would equal a bigger positive, but it appears to cancel everything out.

10 August 2015, 04:49 AM	#3
LuminousMaximus 2024 SubLV41 Pledge Member Join Date: Jan 2013 Location: USA Watch: me hit Huge Lotto Posts: 6,512	Nice observation. I wonder if it's the same in salt water as it in in fresh water. Mm. Better schedule a trip to Hawaii __________________ “Every man Dies... Not Every Man, Really Lives.” – William Wallace - To really lives means to live your life to the fullest. It means to chase your dreams, take risks, and to love life. Since everyone’s fate is the same, why not live the best life that you possibly can? In order to really live,you must seize the day. Live each day as if it's your last and overall just do it! Today is a gift, that’s why it’s called the present...

10 August 2015, 05:09 AM	#4
HogwldFLTR 2024 ROLEX SUBMARINER 41 Pledge Member Join Date: Aug 2012 Real Name: Lee Location: 42.48.45N70.48.48 Watch: Too many to list! Posts: 33,697	The refractive index for H2O and Sapphire or glass are almost the same where as air is quite a bit different (for example 1.4 for glass and water and 1.0 for air) so by removing the air in the model the light is no longer refracted and there is no longer magnification. https://en.wikipedia.org/wiki/Refractive_index __________________ Troglodyte in residence! https://www.rolexforums.com/showthread.php?t=808599

10 August 2015, 05:22 AM	#5
Onikage "TRF" Member Join Date: Feb 2011 Location: England Watch: 16710, 16628 Posts: 7,757	The cyclops loses its convex shape and magnifying properties as the surrounding void is filled with water. __________________ GMT II 16710 TRADITIONAL ( D- Serial #) ROLEXFANBOY P-Club Member #4

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10 August 2015, 03:00 AM	#2
sickened1 2024 SubLV41 Pledge Member Join Date: Aug 2014 Real Name: Ed Location: SoCal Watch: ugiveiswatchuget Posts: 9,054	Date Magnifier Under Water.

10 August 2015, 10:06 AM	#6
V1Rotate "TRF" Member Join Date: Dec 2013 Location: @Boston Watch: 16660 16613 16710 Posts: 278	Works for me! Thanks for the education!

10 August 2015, 10:07 AM	#7
AS1 "TRF" Member Join Date: Mar 2014 Location: NYC / Milan Watch: 6263 Posts: 3,938	This was part of the Rolex strategy for the new smaller cyclops mag... to more closely replicate an authentic underwater tool watch experience

10 August 2015, 10:10 AM	#8
THC 2024 SubLV41 Pledge Member Join Date: Jun 2013 Real Name: Tom Location: Mandeville La Watch: 126333 Posts: 10,666	Everything shrinks in cold water...

10 August 2015, 10:19 AM	#10
Tseg "TRF" Member Join Date: Apr 2014 Real Name: Tom Location: World Traveler Watch: GMT Master II BLNR Posts: 1,583	No wonder my BLNR had had a small magnified date all this time... must be the result of my drool every time I look at my watch.

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