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Specimens should be regularly rotated in order to reduce light damage. 50–100 lux is the recommended light exposure for taxidermy, though some types of feathers are susceptible to damage at 50 lux. [7] The maximum annual exposure levels for biological specimens, feathers, fur, and leather is 180,000 lux hours. [4]
1 lux < 1 lux: Extreme of darkest storm clouds, sunset or sunrise 10 1: 1 decalux: 40 lux: Fully overcast, sunset or sunrise 10 2: 1 hectolux < 200 lux: Extreme of darkest storm clouds, midday 400 lux: Sunrise or sunset on a clear day (ambient illumination) 10 4: 10 kilolux: 10–25 kilolux: Typical overcast day, midday 20 kilolux
The conservation and restoration of lacquerware prevents and mitigates deterioration or damage to objects made with lacquer. The two main types of lacquer are Asian, made with sap from the Urushi tree, and European, made with a variety of shellac and natural resins. Lacquer can be damaged by age, light, water, temperature, or damaged substrate.
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Illumination is kept below 150 lux, with the ultraviolet (UV) component restricted to 75. Dyed objects are extremely light-sensitive and being exposed to lux levels more than 50 is damaging. Maintaining low light levels while using lights that emit less radiant heat is an effective way to prevent damage.
The holiday shopping season has returned, and so has the potential for scams. The FBI warns shoppers to "always" be wary of deals that seem too good to be true, especially as you begin to scope ...
NEW YORK – Over the long, Bronx winter, they’ll remember the inning that went off the rails. A crazy, five-run fifth inning allowed the Dodgers to tie World Series Game 5, but the Yankees ...
In SI units illuminance is measured in lux (lx), or equivalently in lumens per square metre (lm·m −2). [2] Luminous exitance is measured in lm·m −2 only, not lux. [4] In the CGS system, the unit of illuminance is the phot, which is equal to 10 000 lux. The foot-candle is a non-metric unit of illuminance that is used in photography. [5]