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  2. List of musical symbols - Wikipedia

    en.wikipedia.org/wiki/List_of_musical_symbols

    Musical symbols are marks and symbols in musical notation that indicate various aspects of how a piece of music is to be performed. There are symbols to communicate information about many musical elements, including pitch, duration, dynamics, or articulation of musical notes; tempo, metre, form (e.g., whether sections are repeated), and details about specific playing techniques (e.g., which ...

  3. Altimeter - Wikipedia

    en.wikipedia.org/wiki/Altimeter

    The greater the altitude, the lower the pressure. When a barometer is supplied with a nonlinear calibration so as to indicate altitude, the instrument is a type of altimeter called a pressure altimeter or barometric altimeter. A pressure altimeter is the altimeter found in most aircraft, and skydivers use wrist-mounted versions for similar ...

  4. Vital signs - Wikipedia

    en.wikipedia.org/wiki/Vital_signs

    Blood pressure is recorded as two readings: a higher systolic pressure, which occurs during the maximal contraction of the heart, and the lower diastolic or resting pressure. [11] In adults, a normal blood pressure is 120/80, with 120 being the systolic and 80 being the diastolic reading. [12] Usually, the blood pressure is read from the left ...

  5. Blood pressure measurement - Wikipedia

    en.wikipedia.org/wiki/Blood_pressure_measurement

    When measuring blood pressure in the home, an accurate reading requires that one not drink coffee, smoke cigarettes, or engage in strenuous exercise for 30 minutes before taking the reading. A full bladder may have a small effect on blood pressure readings; if the urge to urinate arises, one should do so before the reading.

  6. Blood pressure - Wikipedia

    en.wikipedia.org/wiki/Blood_pressure

    Some fluctuation or variation in blood pressure is normal. Variation in blood pressure that is significantly greater than the norm is known as labile hypertension and is associated with increased risk of cardiovascular disease [63] brain small vessel disease, [64] and dementia [65] independent of the average

  7. Dynamics (music) - Wikipedia

    en.wikipedia.org/wiki/Dynamics_(music)

    In music, the dynamics of a piece are the variation in loudness between notes or phrases.Dynamics are indicated by specific musical notation, often in some detail.However, dynamics markings require interpretation by the performer depending on the musical context: a specific marking may correspond to a different volume between pieces or even sections of one piece.

  8. Note value - Wikipedia

    en.wikipedia.org/wiki/Note_value

    A single eighth note, or any faster note, is always stemmed with flags, while two or more are usually beamed in groups. [16] When a stem is present, it can go either up (from the right side of the note head) or down (from the left side), except in the cases of the longa or maxima which are nearly always written with downward stems. In most ...

  9. Altitude - Wikipedia

    en.wikipedia.org/wiki/Altitude

    Indicated altitude is the reading on the altimeter when it is set to the local barometric pressure at mean sea level. In UK aviation radiotelephony usage, the vertical distance of a level, a point or an object considered as a point, measured from mean sea level; this is referred to over the radio as altitude.(see QNH) [2]