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The e-value of an optical brightening agent refers to the extinction coefficient, which is a measure of how strongly the agent absorbs light at a specific wavelength. It is a crucial parameter in determining the effectiveness of the agent in enhancing the brightness of materials such as paper or fabrics. The higher the e-value, the more efficient the agent is at absorbing light and emitting fluorescence, resulting in a greater optical brightening effect.

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7mo ago

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What is the oxidizing agent for Tide?

Tide laundry detergent typically contains sodium percarbonate, which acts as an oxidizing agent. When dissolved in water, sodium percarbonate releases hydrogen peroxide, which helps to break down stains and whiten fabrics through oxidation. This oxidizing action is effective in removing organic stains and brightening colors in laundry.


What does optical power mean?

Optical power refers to the ability of a lens or optical system to converge or diverge light. It is typically measured in diopters (D) and indicates the strength of the lens in focusing light onto the retina. Positive optical power converges light (useful for correcting hyperopia), while negative optical power diverges light (useful for correcting myopia).


What is a metaphor for flowers?

Flowers are like the smiles of nature, blooming and brightening the world around them.


What is collodial silica?

Colloidal silica is a stable suspension of fine silica particles in a liquid, typically water. It is commonly used in various industries, including electronics, construction, and pharmaceuticals, due to its unique properties such as high surface area, optical clarity, and low viscosity. In addition to its industrial applications, colloidal silica can serve as a polishing agent, a binding agent in ceramics, and a thixotropic agent in coatings. Its versatility makes it an important material in both scientific research and commercial products.


Is transitions optical owned by PPG?

Yes, Transitions Optical is owned by PPG Industries, a leading global supplier of paints, coatings, optical products, and specialty materials. Transitions Optical is known for its adaptive eyewear products that darken in response to sunlight and UV rays.

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