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Oral-B is an American brand of oral hygiene products, including toothpastes, toothbrushes, electric toothbrushes, and mouthwashes. The brand has been in business since the invention of the Hutson toothbrush in 1950 and in Redwood City, California .
3000 N/A 32 WWX Deluxe Warm White ≈87 3000 N/A N/A WX Sylvania White Deluxe ≈85 3500 N/A 79 N Natural ≈90 3600 N/A 34 N/A Deluxe White ≈85 3850 W-SDL 38 CWX Deluxe Cool White/Kolor-rite ≈90 4000 N/A N/A C41 GE Cool White Utility (Enhanced CWX) ≈87 4100 N-SDL, N-EDL N/A C50/DSGN50 GE Chroma 50/Philips Colortone 50/Sylvania Design 50
The lumen (symbol: lm) is the unit of luminous flux, a measure of the perceived power of visible light emitted by a source, in the International System of Units (SI). Luminous flux differs from power ( radiant flux ), which encompasses all electromagnetic waves emitted, including non-visible ones such as thermal radiation ( infrared ).
Lumen depreciation is the luminous flux lost over time, and thus the complement of lumen maintenance. [ 2 ] Lumen maintenance compares the amount of light produced from a light source or from a luminaire when it is brand new to the amount of light output at a specific time in the future.
Oral-B Glide is a PTFE (Teflon) dental floss manufactured by W. L. Gore and Associates exclusively for Procter & Gamble. History. The origin of Glide (which is what ...
Luminous efficacy can be normalized by the maximum possible luminous efficacy to a dimensionless quantity called luminous efficiency.The distinction between efficacy and efficiency is not always carefully maintained in published sources, so it is not uncommon to see "efficiencies" expressed in lumens per watt, or "efficacies" expressed as a percentage.