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  2. pH meter - Wikipedia

    en.wikipedia.org/wiki/PH_meter

    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]

  3. Vietnamese encyclopedias - Wikipedia

    en.wikipedia.org/wiki/Vietnamese_encyclopedias

    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.

  4. Từ điển Bách khoa Việt Nam - Wikipedia

    en.wikipedia.org/?title=Từ_điển_Bách_khoa...

    Retrieved from "https://en.wikipedia.org/w/index.php?title=Từ_điển_Bách_khoa_Việt_Nam&oldid=502103327"

  5. Encyclopedic Dictionary of Vietnam - Wikipedia

    en.wikipedia.org/wiki/Encyclopedic_Dictionary_of...

    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.

  6. Từ điển bách khoa toàn thư Việt Nam - Wikipedia

    en.wikipedia.org/?title=Từ_điển_bách_khoa...

    Pages for logged out editors learn more. Contributions; Talk; Từ điển bách khoa toàn thư Việt Nam

  7. pH indicator - Wikipedia

    en.wikipedia.org/wiki/PH_indicator

    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 ...

  8. Vietnamese units of measurement - Wikipedia

    en.wikipedia.org/wiki/Vietnamese_units_of...

    Originally, many thước of varying lengths were in use in Vietnam, each used for different purposes. According to Hoàng Phê (1988), [1] the traditional system of units had at least two thước of different lengths before 1890, [2] the thước ta (lit. "our ruler") or thước mộc ("wooden ruler"), equal to 0.425 metres (1 ft 4.7 in), and the thước đo vải ("ruler for measuring ...

  9. High School for Gifted Students, VNU University of Science

    en.wikipedia.org/wiki/High_School_for_Gifted...

    The HUS High School for Gifted Students, commonly known as High School for Gifted Students of Science (HSGS; Vietnamese: Trường Trung học phổ thông chuyên Khoa học Tự nhiên), is a specialized, most-selective (6% acceptance rate) public magnet school of VNU University of Science, a member of Vietnam National University, Hanoi system.

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