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  2. Conservation and restoration of ivory objects - Wikipedia

    en.wikipedia.org/wiki/Conservation_and...

    The relative humidity ideally is between 45–55% and the temperature at 70 °F (21 °C). If the relative humidity is too low it can lead to desiccation, shrinkage, and cracking. When the relative humidity it too high is can cause warping and swelling of the ivory. [ 8 ]

  3. Heat index - Wikipedia

    en.wikipedia.org/wiki/Heat_index

    A given value of relative humidity causes larger increases in the heat index at higher temperatures. For example, at approximately 27 °C (81 °F), the heat index will agree with the actual temperature if the relative humidity is 45%, but at 43 °C (109 °F), any relative-humidity reading above 18% will make the heat index higher than 43 °C. [5]

  4. Plattsburgh, NY Weather - Hourly Forecasts and Local ... - AOL

    www.aol.com/weather/forecast/us/plattsburgh-12762531

    55% Humidity. 29.88 in Pressure ... Thu 20 ° F-7 ° C 6 ° F-14 ° C 55% °F °C. Advertisement. ... Snow to blanket High Plains, Rockies before bitterly cold Arctic blast.

  5. Humidifier - Wikipedia

    en.wikipedia.org/wiki/Humidifier

    Humidity needed to reach 55%: 35% Humidity ratio for 35%: 0.0051; ... A room with low humidity will have a higher evaporation rate compared to a room with high ...

  6. Amityville, NY Weather - Hourly Forecasts and Local ... - AOL

    www.aol.com/weather/forecast/united-states/new...

    61% Humidity. 30.56 in Pressure. ... 10PM 38 ° F 3 ° C 55% ; ... Hawaii’s Kilauea volcano is currently spewing fiery red-orange lava up to 250 feet high from its north vent – in what’s ...

  7. Broadview Heights, OH Weather - Hourly Forecasts and Local ...

    www.aol.com/weather/forecast/us/broadview...

    96% Humidity. 29.89 in Pressure. 1 UV ... Thu 31 ° F-1 ° C 21 ° F-6 ° C 55% ; ... A series of flood control reservoirs backed up by massive dams is a key factor driving the high water ...

  8. Upland, CA Weather - Hourly Forecasts and Local Weather ... - AOL

    www.aol.com/weather/forecast/us/upland-12796138

    85% Humidity. 30.00 in Pressure--UV ... 6PM 57 ° F 14 ° C 40% ; 7PM 57 ° F 14 ° C 37% ; 8PM 56 ° F 13 ° C 34% ; 9PM 55 ... That event is forecast to be somewhat less impactful than the high ...

  9. Glass disease - Wikipedia

    en.wikipedia.org/wiki/Glass_disease

    The glass may feel slippery or slimy [10] and tiny droplets, or weeping, may be seen in high humidity (above 55%). [14] The hydrated alkali can form fine crystals on the surface of the glass in low relative humidity (below 40%). [4] At this stage, it may be possible to gently wash the glass and remove the surface alkali. [14]