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The standard type of anti-glare filter consists of a coating that reduces the reflection from a glass or plastic surface. [2] These are manufactured from polycarbonate or acrylic plastic . [ 1 ] An older variety of anti-glare filter used a mesh filter that had the appearance of a nylon screen.
The first screen protector was designed and patented by Herbert Schlegel in 1968 for use on television screens. [1] In 1990s, the CRT screen protectors were used on CRT monitors for anti-glare and anti-radiation purposes. [citation needed] Later, they were adapted for use on LCD monitors.
It started with the incorporation of a company called Roagams Link Ghana Ltd now Rlg Communications (Ghana) Limited, as the leading Ghanaian computer and handset manufacturing company. [ citation needed ] The company is the first indigenous African company to assemble laptops , desktops and mobile phones and offer ICT training in computer and ...
Uncoated glasses lens (top) versus lens with anti-reflective coating. The reflection from the coated lens is tinted because the coating works better at some wavelengths than others. An antireflective , antiglare or anti-reflection ( AR ) coating is a type of optical coating applied to the surface of lenses , other optical elements, and ...
One type of optical coating is an anti-reflective coating, which reduces unwanted reflections from surfaces, and is commonly used on spectacle and camera lenses. Another type is the high-reflector coating , which can be used to produce mirrors that reflect greater than 99.99% of the light that falls on them.
Ghana has been a member state of the Non-Aligned Movement since the time of the 1st Summit of the Non-Aligned Movement in 1961 in Belgrade. As the first decolonized country in Sub-Saharan Africa , Ghana actively participated in earliest efforts to initiate Pan-African and Non-Aligned cooperation.
The Ghana Stock Exchange (GSE) is the principal stock exchange of Ghana. The exchange was incorporated in July 1989 with trading commencing in 1990. It currently lists 42 equities (from 37 companies) and 2 corporate bonds. [1] All types of securities can be listed.
The harmattan, a dry desert wind, blows in north-east Ghana from December to March, lowering the humidity and causing hotter days and cooler nights in northern part of Ghana. [ 4 ] Average daily temperatures range from 30 °C (86 °F ) during the day to 24 °C (75 °F ) at night with a relative humidity between 77 percent and 85 percent. [ 5 ]
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