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Beckman Model M pH Meter, 1937 [1] Beckman model 72 pH meter, 1960 781 pH/Ion Meter pH meter by Metrohm. A pH meter is a scientific instrument that measures the hydrogen-ion activity in water-based solutions, indicating its acidity or alkalinity expressed as pH. [2]
A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH (acidity or basicity) of the solution can be determined visually or spectroscopically by changes in absorption and/or emission properties. [1] Hence, a pH indicator is a chemical detector for hydronium ions (H 3 O +) or hydrogen ions (H +) in the ...
Từ điển bách khoa toàn thư Việt Nam (Encyclopedia of Vietnam), a state-sponsored encyclopedia which was published in 2005. Vietnamese Wikipedia, a project of the Wikimedia Foundation. Vietnam War encyclopedias. Encyclopedic works and encyclopedias focused on Vietnam War-related topics.
Từ điển bách khoa Việt Nam (lit: Encyclopaedic Dictionary of Vietnam) is a state-sponsored Vietnamese-language encyclopedia that was first published in 1995. It has four volumes consisting of 40,000 entries, the final of which was published in 2005. [1] The encyclopedia was republished in 2011.
The Ministry of Science and Technology (MOST, Vietnamese: Bộ Khoa học và Công nghệ) is a government ministry in Vietnam responsible for state administration of science and technology activities; development of science and technology potentials; intellectual property; standards, metrology and quality control; atomic energy, radiation and nuclear safety.
La Gi (pronounced:/la-yi/) is a District-level town (thị xã) of Bình Thuận province, Vietnam. Under the Republic of Vietnam period, La Gi was the provincial capital of Bình Tuy province (present-day western Bình Thuận Province). After the Vietnam War, it became the capital of Hàm Tân District. It was established in 2005 with the ...
The Ho Chi Minh City University of Technology (HCMUT; Vietnamese: Trường Đại học Bách khoa, Đại học Quốc gia Thành phố Hồ Chí Minh, lit. 'Polytechnic of Vietnam National University, Ho Chi Minh City') [1] is a research university in Ho Chi Minh City, Vietnam. HCMUT is a member of Vietnam National University, Ho Chi Minh ...
Pages for logged out editors learn more. Contributions; Talk; Từ điển bách khoa toàn thư Việt Nam
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