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  2. Infant communion - Wikipedia

    en.wikipedia.org/wiki/Infant_communion

    The Apostolic Constitutions (4th century) instruct that children are to receive communion after the various orders of clergy and consecrated laity and before the general congregation. With no practical difficulties or theological qualms with giving communion to young children, this practice continues in the Eastern Orthodox Church to this day.

  3. Eucharistic discipline - Wikipedia

    en.wikipedia.org/wiki/Eucharistic_discipline

    The Congregation of Mary Immaculate Queen (CMRI), a sedavacantist religious group, teaches that the Eucharistic Fast consists of means fasting from food and alcohol three hours prior to receiving Holy Communion, and though not obligatory, members of the sect are "urged to observe the Eucharistic fast" from midnight on a day until the time that ...

  4. Sound exposure - Wikipedia

    en.wikipedia.org/wiki/Sound_exposure

    1 dB = ⁠ 1 / 20 ⁠ ln 10 is the decibel. The commonly used reference sound exposure in air is [2] = . The proper notations for sound exposure level using this reference are L W/(400 μPa 2 ⋅s) or L W (re 400 μPa 2 ⋅s), but the notations dB SEL, dB(SEL), dBSEL, or dB SEL are very common, even if they are not accepted by the SI.

  5. Liturgical reforms of Pope Pius XII - Wikipedia

    en.wikipedia.org/wiki/Liturgical_reforms_of_Pope...

    Ordinary communicants would calculate the time until the moment they took communion; priests fasted based on the time they began saying Mass. [1] The new fasting rules opened the way to scheduling evening Masses, which the fast from midnight regime made all but impossible for those desiring to receive communion.

  6. Fasting and abstinence in the Catholic Church - Wikipedia

    en.wikipedia.org/wiki/Fasting_and_abstinence_in...

    Pope Pius XII reduced this in 1957 to fasting (from solid food and alcohol) for three hours before the time of reception of Communion, which paved the way for the celebration of evening Masses. [34] A further reduction came in 1964, when Pope Paul VI reduced the Eucharistic Fast to one hour , and less still for priests celebrating more than one ...

  7. Acoustic trauma - Wikipedia

    en.wikipedia.org/wiki/Acoustic_trauma

    Acoustic trauma is the sustainment of an injury to the eardrum as a result of a very loud noise. Its scope usually covers loud noises with a short duration, such as an explosion, gunshot or a burst of loud shouting. Quieter sounds that are concentrated in a narrow frequency may also cause damage to specific frequency receptors. [1]

  8. Quam singulari - Wikipedia

    en.wikipedia.org/wiki/Quam_singulari

    Quam singulari was a decree released by Pope Pius X in 1910, concerning the admittance of children to the Eucharist. This followed a decree by the Sacred Congregation of the Council, five years before on frequent Communion. [1] Pope Pius X

  9. dBrn - Wikipedia

    en.wikipedia.org/wiki/DBrn

    Weighted noise power in dB is referred to 1.0 picowatt. Thus, 0 dBrn = -90 dBm. Use of 144 line, 144-receiver, or C-message weighting, or flat weighting, can be indicated in parentheses. With C-message weighting, a one-milliwatt, 1000 Hz tone will read +90 dBrn, but the same power as white noise, randomly distributed over a 3 kHz band will read ...