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  2. Actigraphy - Wikipedia

    en.wikipedia.org/wiki/Actigraphy

    an accelerometer, [3] a real time clock or timer to start/stop the actigraph recording at specific times, and to record accumulate values for a specific time frame, a non-volatile memory to store the resulting values, an optional low-pass filter which filters out everything except the 2–3 Hz band, thereby ensuring external vibrations are ...

  3. Military Sleep Method Helps You Fall Asleep In 2 Minutes: “It ...

    www.aol.com/lifestyle/military-sleep-method...

    Image credits: justin_agustin 2. Breathe Deeply. Deep, measured breathing is essential. Take a long, slow breath in, and exhale even more slowly. With each breath, consciously release any ...

  4. Thunder - Wikipedia

    en.wikipedia.org/wiki/Thunder

    Thunder is the sound caused by lightning. [ 1 ] [ 2 ] [ 3 ] Depending upon the distance from and nature of the lightning, it can range from a long, low rumble to a sudden, loud crack. The sudden increase in temperature and hence pressure caused by the lightning produces rapid expansion of the air in the path of a lightning bolt . [ 4 ]

  5. Severe thunderstorm warning - Wikipedia

    en.wikipedia.org/wiki/Severe_thunderstorm_warning

    In Canada, a severe thunderstorm is defined as having wind gusts of greater than 90 km/h (56 mph), hail with a diameter of greater than two centimetres (0.79 in), rainfall rates of greater than 50 millimetres (2.0 in) in one hour or greater than 75 millimetres (3.0 in) in three hours, or tornadoes. [14]

  6. Thundersnow - Wikipedia

    en.wikipedia.org/wiki/Thundersnow

    The heavy snowfall tends to muffle the sound of the thunder so that it sounds more like a low rumble than the loud, sharp bang that is heard during regular thunderstorms. [2] Thundersnow can occur during a normal snowstorm that sustains strong vertical mixing which allows for favorable conditions for lightning and thunder to occur.

  7. Dry thunderstorm - Wikipedia

    en.wikipedia.org/wiki/Dry_thunderstorm

    A dry thunderstorm is a thunderstorm that produces thunder and lightning, but where all or most of its precipitation evaporates before reaching the ground. [1] Dry lightning refers to lightning strikes occurring in this situation.

  8. Pajama Sam 2: Thunder and Lightning Aren't so Frightening

    en.wikipedia.org/wiki/Pajama_Sam_2:_Thunder_and...

    While watching television, Sam gets startled by a thunderstorm and decides to make it stop by traveling to World Wide Weather, the company that produces the weather. By stowing away in a crate to be carried into World Wide Weather, Sam infiltrates the building and confronts the workers Thunder and Lightning only to realize that they are very friendly and that thunderstorms are beneficial for ...

  9. Cognitive behavioral therapy for insomnia - Wikipedia

    en.wikipedia.org/wiki/Cognitive_behavioral...

    Cognitive behavioral therapy for insomnia (CBT-I) is a therapy technique for treating insomnia without (or alongside) medications. CBT-I aims to improve sleep habits and behaviors by identifying and changing thoughts and behaviors that prevent a person from sleeping well.