Clock Glow
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 Lot of 2 Vintage Electric Westclox  US $9.99
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 3 VINTAGE ELECTRIC WALL CLOCK CLOCKS WESTCLOX SESSIONS ONE WORKING RESTORE US $7.99
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 Vintage Westclox Big Ben Alarm Clock Illuminated Glow in Dark Hands Green Face US $9.99
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 Hello Kitty Cute Cubic LCD Desktop Alarm Clock Thermometer Flash Glow White S8IT US $8.70
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 VINTAGE TRAVEL ALARM CLOCK PHINNEY WALKER GERMANY GLOW IN DARK NUMERALS WORKS US $6.00
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 VTG GENIE LUMINOUS ALARM CLOCK GLOW IN DARK HANDS NUMBERS WORKS US $9.99
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 Vintage travel alarm clock Western Germany By Renown Very Collectable US $.99
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 ANTIQUE CLOCK CASE CLEANER DESK FURNITURE UNBELIEVEABLE WORKS GREAT GUARANTEED US $17.50
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 By Westclox Vintage Look winding Ticking Alarm Clock With Twin Large Bells US $9.95
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 7 LED Color Hello Kitty Digital Alarm Thermometer clock Assorted Type 4 gift US $12.50
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 Sessions United Train Locomotive Clock With Light US $9.99
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 RARE Vintage Heco Travel Alarm Clock GERMAN Gold Hands Dial Metal case US $19.99
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 Vtg Bradley Wind up Musical Alarm Clock Western Germany Works Great Nice US $9.99
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 Vtg Bradley Wind up Travel Alarm Clock Germany US ZONE Works Great Nice US $9.99
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 Vintage Brass Linden Black Forest Twin Bell Alarm Clock Germany US $29.99
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 Vintage Retro Linden Black forest Made in Germany Alarm Clock US $2.00
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 VINTAGE WESTCLOX BIG BEN WIND UP ALARM CLOCK WORKS US $5.99
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 Vintage 60s Linden Wind Up Travel Alarm Clock Glow Hands GUC US $4.99
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 VINTAGE FOSSIL WINDUP ALARM CLOCK HANDS GLOW WORKS FANTASTIC US $20.45
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 Retro Vintage Westclox Clamshell Compact Travel Alarm Clock Windup Tan Round US $44.99
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 Vintage Elgin Clock Parts Lot of 16 Pieces US $24.99
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 Bulova Vintage Travel Clock US $5.00
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 VINTAGE WESTCLOX NEUCHATEL WIND UP ALARM CLOCK US $10.00
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 kit cat clock 1950 US $51.77
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 Mikasa Monarch Frosted Crystal Clock US $14.99
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 SETH THOMAS TRAVEL ALARM CLOCK MADE IN GERMANY FROM LATE 50S OR 60S WORKING US $14.99
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 VINTAGE WESTCLOX BIG BEN WIND UP ALARM CLOCK WORKS 5 X 5 X 2 US $6.99
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 HISTORIC ROUTE 66 NEON CLOCK15 1 8W x17 3 4 H US $32.00
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 Vintage GE Electric Clock Model 7293k Beige US $7.00
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 Howard Miller Goldtone Metal Carriage Clock Shelf Quartz w Alarm Works Great US $2.99
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 6xIN 12 Nixie Tubes Clock led backlight and alarm steampunk vintage retro watch US $219.00
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 Nice West Germany German Red WInd Up Sheffield Alarm Clock Thermometer Too US $9.99
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 Antique Westclox Art Deco Black Alarm Clock for Parts Repair Vintage US $10.00
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 Old Fashioned Brushed Metal Alarm Clock Battery Powered Twin Bell Battery Power US $7.99
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 Vintage 1960s WEHRLE Wind Up COMMANDER ALARM CLOCK NiteGlo WORKING GERMANY OLD US $10.50
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 RETRO BABY BEN ALARM CLOCK WIND UP GLOW IN THE DARK WESTCLOX SORT OF WORKS US $2.00
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 Mid Century Linden Blackforest West Germany Oval Alarm Clock US $39.99
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 Nice Older Working MasterCrafters Happy Time Clock Model 911 US $31.00
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 Peter Retro Germany Alarm Clock w Glow in the dark Numbers US $.99
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 Vintage Big Ben Westclock 1960s Alarm Clock Luminous Keywound 1 53647 US $4.99
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 VINTAGE JEFFERSON GOLDEN HOUR MYSTERY CLOCK IN WORKING ORDER US $28.00
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 Vintage Phinney Walker Travel Alarm Clock Made in Germany Works US $5.00
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 RARE Vintage Retro Pink TimeMaster Radium West Western Germany Alarm Clock WORKS US $19.99
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 RARE Original Vintage 50s Blue Kit Cat Clock Klock Allied D3 Works Perfectly US $250.00
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 Vintage West Germany PHINNEY WALKER Gold Gilded Alarm Clock for Repair US $.99
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 VINTAGE WESTCLOX BABY BEN ALARM CLOCK BROWN FACE METAL CASE WORKS US $14.95
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 Beautiful rare unique antique mantle clock with portrait light collectable art US $19.95
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 Vintage Red Bulova Travel Alarm Clock in Compact Case Square Glow Hands Korea US $9.99
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 MINIATURE CLOCK COLLEZIO NIGHT GLOW QUARTZ JAPAN WORKING US $8.00
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 Vintage 1970s TIMEX LUMINOUS Alarm Clock Ivory Color Modern MOD Design US $9.99
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 Vintage Clocks Timex Luminous Night Glow 7370 1A Minikin Clock S32 A Both Work US $9.99
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 VINTAGE WESTCLOX SHELBY ALARM CLOCK BAKELITE BRASS NICE WORKING US $7.95
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 Vintage Travel Alarm Clock Made In Germany by Amigo US $11.99
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 SOMETHING SMALL MAY JUST BE WHAT THAT WALL OR ROOM IS MISSING US $12.00
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 Vintage Westclox Ornate Regency Glamour Alarm Clock Floral Footed Case Works US $19.99
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 Vintag Silver Metal Alarm Clock Double Bell Black Face Glow in Dark Made Hungary US $14.95
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 Vintage Overocean Alarm Clock Travel Clock Brass Frame Footed Made in Germany US $5.00
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 Baby Ben Westclok Nightstand Alarm Clock US $4.95
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 WESTCLOX DIALITE DROWSE RETRO SPACE AGE FLIP CLOCK 1970s w LIGHTED DIAL US $59.99
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 VINTAGE TRADITION PORCELAIN CLOWN ALARM SHELF WIND UP CLOCK MADE IN JAPAN JWC11 US $9.99
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 SETH THOMAS TRAVEL ALARM CLOCK LEATHER CASE GERMANY WORKING CONDITION US $7.95
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 Vintage Florn Working Wind Up Travel Alarm Clock Sliding BrassLeather Germany US $15.99
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 VINTAGE WINDUP SETH THOMAS FOLDING TRAVEL ALARM CLOCK KEEPS GOOD TIME US $2.99
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 GE 11088 El Clock Night Light Always On Wood Finish US $11.99
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 LOUD NEW OLD STOCK VINTAGE Classic KUCO USSR Winding Alarm Clock Desk Table US $22.99
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 LOUD NEW OLD STOCK Vintage Classic KUCO USSR Winding Alarm Clock Table Desk US $26.99
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 New Old Stock PETER Winding Alarm Clock in Brass Cast Base Black Silver Plated US $114.99
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 VERY LOUD NEW OLD STOCK Vintage Classic PETER Winding Alarm Clock German Table US $61.99
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 KRESKY OIL BURNERS by NEON Products INC Lima Ohio US $190.50
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 Vintage Seth Thomas Seven Jewel Cases Alarm Clock Made In Germany US $9.99
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 Coca Cola Coke Red Alarm Clock Vintage Retro 1997 US $7.99
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 VintageAuthenticArtDeco Phinney WalkerPinkRhinestoneJewel AlarmClockGermany US $76.95
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 SWISS ARMY VICTORINIX TRAVEL DUAL TIME ZONE ALARM CLOCK CAMPING WATCH WOW US $4.99
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 Vintage German Trenkle Alarm Clock w Filigree Sides and Art Nouveau Numbers US $.99
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 IN12 Tube Nixie Desk Clock Black RGB Led Mood Glow US $10.00
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 Vintage Westclox Baby Ben Wind Up Alarm Clock w Glow in the Dark Hands WORKS US $7.99
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 VINTAGE WALTHAM 1960s ALARM CLOCK Wind Up Brass Metal 50 years New with Box US $9.99
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 VINTAGE WALTHAM 60s 8 Day ALARM CLOCK Wind Up Brass Metal 50 years New w Box US $12.00
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 VINTAGE ALLIED KIT KAT FELIX THE CAT CLOCK EYES TAIL MOVE 1950s US $95.00
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 Vintage Alarm Clock Marked Made In Hungary US $5.00
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What is the glow in the dark element used on todays watches and clocks called?
What is the element called which is used on todays glow in the dark watches etc?
And would it show up on a geiger counter?
There are various ways of doing it. The most common way is by using a paint that absorbs radiation from light and then slowly releases it. Invicta for example uses Trinite, which is their trademark name for that paint. The problem is that it doesn't glow for too long and it is generally not too bright.
The other method of doing this, and this is generally only done on higher-end watches such as Ball, they insert vials with tritium on the parts that need to glow. The vials are coated with phosphor, the phosphor then lights up due to the radiation of the tritum. Tritium is chemically, H3. The glow will last up to 26 years sometimes. The problem with these watches is that since they do contain radioactive material, they must be licensed by the nuclear regulatory commission. They are only allowed 25 mCi of tritium in each watch. The link below has more about the regulations depending on what element is used in the watch. Another problem with this type of watch is that they are generally very thick. The Ball Engineer Hydrocarbon is about 20 mm thick. To put it in perspective, most men's watches are about 37-43 mm wide.
http://www.ilga.gov/commission/jcar/admincode/032/032003300A00400R.html
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