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Trường Trung học phổ thông chuyên Ngoại ngữ 1969 VNU University of Languages and International Studies: Cầu Giấy district, Hanoi: High School for Gifted Students in Social Sciences and Humanities [3] Trường Trung học phổ thông chuyên Khoa học Xã hội và Nhân văn 2019 VNU University of Social Sciences and Humanities
Lê Khiết High School for the Gifted (Vietnamese: Trung học Phổ thông Chuyên Lê Khiết) is a highly selective [1] public magnet high school in Quảng Ngải province, Vietnam. Founded in 1945, the school became a part of the nationwide public magnet school systems in 1993. [2]
Violet is the color of light at the short wavelength end of the visible spectrum. It is one of the seven colors that Isaac Newton labeled when dividing the spectrum of visible light in 1672. Violet light has a wavelength between approximately 380 and 450 nanometers. [2] The color's name is derived from the Viola genus of flowers. [3] [4]
These lamps emit ultraviolet light with two peaks in the UVC band at 253.7 nm and 185 nm due to the mercury within the lamp, as well as some visible light. From 85% to 90% of the UV produced by these lamps is at 253.7 nm, whereas only 5–10% is at 185 nm. [39] The fused quartz tube passes the 253.7 nm radiation but blocks the 185 nm wavelength.