This article discusses the discovery of phosphorescent lithopone on watercolor drawings by American artist John La Farge dated between 1890 and 1905 and the history of lithopone in the pigment industry in the late 19th and early 20th centuries. Despite having many desirable qualities for use in white watercolor or oil paints, the development of lithopone as an artists' pigment was hampered by its tendency to darken in sunlight. Its availability to, and adoption by, artists remain unclear, as colormen's trade catalogs were generally not explicit in describing white pigments as containing lithopone. Further, lithopone may be mistaken for lead white during visual examination and its short-lived phosphorescence can be easily missed by the uninformed observer. Phosphorescent lithopone has been documented on only one other work-to-date: a watercolor by Van Gogh. In addition to the history of lithopone's manufacture, the article details the mechanism for its phosphorescence and its identification aided by Raman spectroscopy and spectrofluorimetry.
Lithopone B301, Lithopone B311 powder is also widely applied in paints and enamels
English name: Lithopone
In summary, 50mm black insulation tape is a multifaceted tool that proves invaluable in various fields. Whether used for electrical insulation, repairs, construction, or creative projects, its reliability and ease of use make it a staple in any toolbox. The combination of its durability, versatility, and effectiveness ensures that it will continue to play a crucial role in both professional and personal applications. As industries evolve and innovation continues, the essential nature of products like black insulation tape will inevitably remain steadfast, adapting to meet the ever-changing needs of users.
There are several types of polyethylene film, each with a different density and use. Polyethylene tape is categorized by the tape’s density:
An industrial control box is not just an accessory; it’s a critical component in a well-oiled industrial environment, facilitating uninterrupted operations and enhancing safety.
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What is PVC tape? And what is it used for? Is PVC tape the same thing as electrical tape? If you are unsure about how to use PVC tape, our handy guide has lots of answers for you.
The Versatile Utility of PVC Black Tape
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1. Warehouses In a bustling warehouse, where machinery, personnel, and products interact, clear pathways are essential. Red and white tape can demarcate pedestrian walkways, separate moving zones, or highlight dangerous areas, such as near forklifts.