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VNDirect, Vietnam's third largest broker in terms of transactions handled according to the Ho Chi Minh City exchange, has been disconnected from the trading system since Monday.
[25] [26] According to a report by VNDIRECT Securities Company, Vietnam had about 70,000 drugstores in 2022, including 59,000 traditional retail drugstores (accounting for 84%) and 11,000 chain drugstores (accounting for 16%). The revenue of Vietnam's pharmaceutical retail market reached about 80,000 billion VND.
An example of this phenomenon is when clean air scatters blue light more than red light, and so the midday sky appears blue (apart from the area around the Sun which appears white because the light is not scattered as much). The optical window is also referred to as the "visible window" because it overlaps the human visible response spectrum.
Blue light, a type of high-energy light, is part of the visible light spectrum. High-energy visible light (HEV light) is short-wave light in the violet/blue band from 400 to 450 nm in the visible spectrum, which has a number of purported negative biological effects, namely on circadian rhythm and retinal health (blue-light hazard), which can lead to age-related macular degeneration.
Light, visible light, or visible radiation is electromagnetic radiation that can be perceived by the human eye. [1] Visible light spans the visible spectrum and is usually defined as having wavelengths in the range of 400–700 nanometres (nm), corresponding to frequencies of 750–420 terahertz .
The apparent speed of light will change in a gravity field and, in particular, go to zero at an event horizon as viewed by a distant observer. [4] In deriving the gravitational redshift due to a spherically symmetric massive body, a radial speed of light dr / dt can be defined in Schwarzschild coordinates , with t being the time recorded on a ...
Ngo Minh Hieu (also known as Hieu PC; born October 8, 1989) is a Vietnamese cyber security specialist and a former hacker and identity thief.He was convicted in the United States of stealing millions of people's personally identifiable information and in 2015 he was sentenced to 13 years in U.S. federal prison. [2]
Visible light is only a small portion of the electromagnetic spectrum. In telecommunications, visible light communication (VLC) is the use of visible light (light with a frequency of 400–800 THz/wavelength of 780–375 nm) as a transmission medium. VLC is a subset of optical wireless communications technologies.