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Bulova C4865 Night Vision Illuminated Wall Clock
Size: Diameter 10", Depth 1.75".
Bulova C4886 Vineyard Illuminated Wall Clock
Size: Diameter: 22" Depth: 3.5"
Bulova C4891 Tide Illuminated Tide Clock
Size: Diameter: 10" Depth: 1.75"
Bulova C4893 Beacon Illuminated Wall Clock
A fully backlit dial and traditional easy-to-read numbers make this a perfect kitchen or bath clock. A flexible, impact-resistant molded case is finished in today’s popular blue with a matte silver inside accent bezel. A Quiet-Sweep second hand (no ticking) effortlessly moves around the dial, which is protected by a glass lens. The fully illuminated back dial turns on and off automatically depending on the amount of light in the room. If preferred, the lighted dial can be turned off completely. The accurate Quartz Quiet-Sweep movement is powered by one "AA" battery. The illumination is powered by 3 "AA" batteries. One-Year Warranty and Free Shipping.
Size: Diameter: 10" Depth: 1.75"
Bulova Darian C4892 Teal Illuminated Wall Clock
Size: 10" Diameter x 1.75" Deep.
Seiko QXA788BLH Illuminated Wall Clock
Size: Diameter 13", Depth 1.73".
Seiko QXA788ZLH Illuminated Wall Clock
Black number ring and white numerals and a white center disk on the center of the dial. Brown wood print molded frame will always keep its shape. This clock offers a switch on the back where you may choose between two levels of illumination for nighttime viewing. There is a light sensor on the dial that will turn on two lights at the 4:00 and 8:00 positions of the dial so the clock may be read easily in the dark. You may also use the clock without illumination. Accurate Quartz "step" movement. One Year Warranty and Free Shipping.
Size: Diameter 12.7", Depth 1.73".
Bulova C4826 Light Time Illuminated Indoor-Outdoor Wall Clock
Size: Diameter: 14" Depth: 3"
Bulova C4813 Weathermaster II Illuminated Outdoor Wall Clock
A new clock for the deck, Patio or Vernanda that illuminates in the dark. The Bulova Weather Master Outdoor Wall Clock offers an all metal case with an oil rubbed bronze finish with a glass cover. A battery powered Quartz Movement is sealed with a gasket for protection from outdoor elements. Arabic numerals and instrument graphics are printed with a light reflective ink, then covered with a clear acrylic diffusing overlay. Four strategically placed battery-powered LED lights, controlled by a light-sensor, illuminate at dusk and keep the dial visible until dawn. Includes a thermometer with Fahrenheit and Celsius scales and a hygrometer, both also legible at night. One year warranty and Free Shipping.
Size: Diameter: 18 inches
Bulova C4861 Long Play Bluetooth® Enabled Wall Clock
Size: Diameter:16.75", Depth: 3"
Howard Miller Memory 625-632 Table Clock / Wall Clock
The Howard Miller Memory Clock 625-632 was designed for those with Dementia, Alzheimer's, Memory Loss or wish to have an easy to read clock with nighttime illumination on the numerals. The clock clearly displays the day, time, and month without using abbreviations and clearly spells out the full DAY of the week and the MONTH (and date) in large, bold letters - without confusing abbreviations. An 8" diagonal, high definition back-lit LCD display clearly displays all characters in direct sunlight and the display will dim after 7:00PM so it will illuminate only the characters and not the room. One year warranty and Free Shipping.
Size: Width - 8 9/16", Height 6 7/8, Depth 1"
Luminous Clocks
Do Luminous clocks glow in the dark?
Answer: Only for a very short period of time time.
Luminous clock hands have been used for over a century, and radium was initially used to paint the hands. However, radium is a highly radioactive substance that posed a significant health risk and deaths to the workers who applied it. In the 1960s, the use of radium in clock dials was banned due to its health hazards.
After radium, Tritium came into the picture, which was less radioactive than radium and was a safer alternative to Radium; however, it was expensive and not an affordable option for home use.
In the early 1990s, a new alternative, strontium aluminate, replaced other materials as the customary material for luminous clock dials. It is a non-radioactive material that absorbs light and slightly reemits it temporarily, making it glow in the dark for several minutes. However, it is essential to note that any glow from luminous clock dials does not last long, and after a few minutes, it completely disappears.
While some manufacturers claim that their luminous clocks glow all night, this is not the case, and most pictures of luminous clock dials online that appear bright have been photoshopped to make them appear brighter than they actually are.
Today, the only way to have a clock that is readable all night is to have one with LED(s) to illuminate the clock dial.
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