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2. Minimum efficiency reporting value - Wikipedia

   en.wikipedia.org/wiki/Minimum_Efficiency...

   Minimum Efficiency Reporting Value, commonly known as MERV, is a measurement scale designed in 1987 by the American Society of Heating, Refrigerating and Air-Conditioning Engineers ( ASHRAE) to report the effectiveness of air filters in more detail than other ratings. For example, often a high-efficiency particulate air ( HEPA) filter is ...

3. Siege of Merv (1221) - Wikipedia

   en.wikipedia.org/wiki/Siege_of_Merv_(1221)

   The siege of Merv ( Persian: محاصره مرو) took place in April 1221, during the Mongol conquest of the Khwarazmian Empire. In 1219, Genghis Khan, ruler of the Mongol Empire, invaded the Khwarazmian Empire ruled by Shah Muhammad II. While the Shah planned to defend his major cities individually and divided his army to station in several ...

4. Clean air delivery rate - Wikipedia

   en.wikipedia.org/wiki/Clean_Air_Delivery_Rate

   The AHAM-certified seal lists a rating for tobacco smoke, pollen, and dust removal, and a rating for room size. The clean air delivery rate ( CADR) is a figure of merit that is the cubic feet per minute (CFM) of air that has had all the particles of a given size distribution removed. For air filters that have air flowing through them, it is the ...

5. 22 Free Printable Christmas Cards for the Perfect Holiday Cheer

   www.aol.com/15-free-printable-christmas-cards...

   Printable Christmas cards. Sending Christmas cards can be a fun Christmas activity, but it can also feel like a chore to pick the perfect card, decide what to write in a Christmas card, and make ...

6. List of popular Christmas singles in the United States

   en.wikipedia.org/wiki/List_of_popular_Christmas...

   Digital download track that peaked at No. 25 on the Billboard Hot 100 and No. 12 on the Billboard Hot Digital Songs chart. [153] "A Christmas Love" Johnny Kaye with the Morty Jay Orchestra 1963 Charted for 1 week on the Christmas Singles chart, peaking at No. 20. [11] "Christmas Lullaby" Cary Grant: 1967 Written by Peggy Lee and Cy Coleman. [93]

7. Adams Synchronological Chart or Map of History - Wikipedia

   en.wikipedia.org/wiki/Adams_Synchronological...

   Adams Synchronological Chart or Map of History, originally published as Chronological Chart of Ancient, Modern and Biblical History is a wallchart that graphically depicts a Biblical genealogy alongside a timeline composed of historic sources from the history of humanity from 4004 BC to modern times . The scroll traces the course of human ...

8. ColorChecker - Wikipedia

   en.wikipedia.org/wiki/ColorChecker

   ColorChecker. The ColorChecker Color Rendition Chart (often referred to by its original name, the Macbeth ColorChecker[ 1] or simply Macbeth chart[ 2]) is a color calibration target consisting of a cardboard-framed arrangement of 24 squares of painted samples. The ColorChecker was introduced in a 1976 paper by McCamy, Marcus, and Davidson in ...

9. Former Horse Pasture Mates Instantly Recognize Each Other ...

   www.aol.com/former-horse-pasture-mates-instantly...

   Zazu was hanging out in his new pasture when his caretaker surprised him with a visit from Lightning. "We just took Lightning in as a lease horse," they explained in the footage. The two ...