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  2. Heat lightning - Wikipedia

    en.wikipedia.org/wiki/Heat_lightning

    The actual phenomenon that is sometimes called heat lightning is simply cloud-to-ground lightning that occurs very far away, with thunder that dissipates before it reaches the observer. [2] At night, it is possible to see the flashes of lightning from very far distances, up to 100 miles (160 km), but the sound does not carry that far. [3]

  3. Atmospheric refraction - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_refraction

    Atmospheric refraction of the light from a star is zero in the zenith, less than 1′ (one arc-minute) at 45° apparent altitude, and still only 5.3′ at 10° altitude; it quickly increases as altitude decreases, reaching 9.9′ at 5° altitude, 18.4′ at 2° altitude, and 35.4′ at the horizon; [4] all values are for 10 °C and 1013.25 hPa ...

  4. Mirage - Wikipedia

    en.wikipedia.org/wiki/Mirage

    The word comes to English via the French (se) mirer, from the Latin mirari, meaning "to look at, to wonder at". [ 2 ] Mirages can be categorized as "inferior" (meaning lower), "superior" (meaning higher) and " Fata Morgana ", one kind of superior mirage consisting of a series of unusually elaborate, vertically stacked images, which form one ...

  5. Extreme heat means nights are getting warmer — and it ... - AOL

    www.aol.com/lifestyle/extreme-heat-means-nights...

    “When it is too hot, especially at night, our body temperature doesn’t have the chance to fall — also called thermoregulation — which interferes with sleep.” In fact, one study found ...

  6. Effect of Sun angle on climate - Wikipedia

    en.wikipedia.org/wiki/Effect_of_Sun_angle_on_climate

    The one at a shallower angle covers twice as much area with the same amount of light energy. Figure 1 presents a case when sunlight shines on Earth at a lower angle (Sun closer to the horizon), the energy of the sunlight is spread over a larger area, and is therefore weaker than if the Sun is higher overhead and the energy is concentrated on a ...

  7. Why is it hard to sleep in the heat? Experts explain. - AOL

    www.aol.com/lifestyle/why-hard-sleep-heat...

    Sleeping in a hot room messes with your sleep. Here's why — and what the idea room temperature is for a good night's rest. Skip to main content. Lifestyle. 24/7 help. For premium support please ...

  8. How does heat kill? It confuses your brain. It shuts down ...

    www.aol.com/lifestyle/does-heat-kill-confuses...

    Dr. Neil Gandhi, emergency medicine director at Houston Methodist Hospital, said during heat waves anyone who comes in with a fever of 102 or higher and no clear source of infection will be looked ...

  9. Heat burst - Wikipedia

    en.wikipedia.org/wiki/Heat_burst

    The peak of heat burst conditions is the maximum observed temperature. The beginning of a heat burst is the time during which the air temperature increases without decreasing until after the peak; the end of a heat burst is when the system ceases to affect the temperature and dew point of the area.

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