Intel. On October 28, 2018, IBM announced its intent to acquire Red Hat for $34 billion. The acquisition closed on July 9, 2019. It now operates as an...

published on 17 December 2019, with an additional pair of names (for the star HAT-P-21 and its planet) approved on 1 March 2020. An additional two star names...

The cloche hat or simply cloche (pronunciation) is a fitted, bell-shaped hat for women that was invented in 1908 by milliner Caroline Reboux. They were...

boonie hat or booney hat is a type of wide-brim sun hat commonly used by military forces in hot tropical climates. Its design is similar to a bucket hat but...

Telescope Network (HATNet) project is a network of six small fully automated "HAT" telescopes. The scientific goal of the project is to detect and characterize...

football hat-trick scoring, including exceptional numbers of hat-tricks; exceptional feats in scoring a hat-trick; and achievements relating to the hat-trick...

A pork pie hat is one of several different styles of hat that have been worn since the mid-19th century. The pork pie hat gained further popularity in...

a period of 141.6 days. It has a mass of at least 1.13 Jupiter masses. HAT-P-34 is a star 1.392±0.047 times as massive as the Sun with 1.535+0.135 −0.102...

HAT-P-9 is a magnitude 12 F star approximately 1500 light years away in the constellation Auriga. A search for a binary companion star using adaptive...

WASP-11b/HAT-P-10b or WASP-11Ab/HAT-P-10Ab is an extrasolar planet discovered in 2008. The discovery was announced (under the designation WASP-11b) by...

Fourier transform of another). For example, [ x ^ , p ^ x ] = i ℏ I {\displaystyle [{\hat {x}},{\hat {p}}_{x}]=i\hbar \mathbb {I} } between the position...

A hat is a head covering which is worn for various reasons, including protection against weather conditions, ceremonial reasons such as university graduation...

HAT-P-9b, formally named Alef, is an exoplanet approximately 1500 light years away in the constellation Auriga. This planet was found by the transit method...

HAT-P-17 is a K-type main-sequence star about 92.4 parsecs (301 ly) away. It has a mass of about 0.857 ± 0.039 M☉. It is the host of two planets, HAT-P-17b...

"The Man in the Yellow Hat" and taken from Africa to America where the two live together. George and the Man in the Yellow Hat become friends. George's...

HAT-P-33b is a planet in the orbit of HAT-P-33, which lies 1,310 light years away from Earth. Its discovery was reported in June 2011, although it was...

particle in one spatial dimension, the definition is: p ^ = − i ℏ ∂ ∂ x {\displaystyle {\hat {p}}=-i\hbar {\frac {\partial }{\partial x}}} where ħ is...

HAT-P-4b is a confirmed extrasolar planet orbiting the star HAT-P-4 over 1000 light years away in Boötes constellation. It was discovered by transit on...

p. 88. ISBN 978-0-203-93880-5. Pannonia and Illyria also appear to have been especially associated with hats. Plautus (...) lampoons an Illyrian hat so...

HAT-P-7 is a F-type main sequence star located about 1088 light-years away in the constellation Cygnus. The apparent magnitude of this star is 10.5, which...

Hat Yai (Thai: หาดใหญ่, pronounced [hàːt jàj], also Haad Yai or Had Yai) is a city in southern Thailand near the Malaysian border and the fifth-largest...

− p ^ x ^ ) | ψ ⟩ = ( x ^ − x 0 I ^ ) p ^ | ψ ⟩ = i ℏ | ψ ⟩ , {\displaystyle [{\hat {x}},{\hat {p}}]|\psi \rangle =({\hat {x}}{\hat {p}}-{\hat {p}}{\hat...

Medicine Hat is a city in southeast Alberta, Canada. It is located along the South Saskatchewan River. It is approximately 169 km (105 mi) east of Lethbridge...

Hat Full of Stars is the fourth studio album by American singer-songwriter Cyndi Lauper, released in 1993. The album was released 4 years after the singer's...

skewness}})^{2}={\frac {4({\hat {\beta }}-{\hat {\alpha }})^{2}(1+{\hat {\alpha }}+{\hat {\beta }})}{{\hat {\alpha }}{\hat {\beta }}(2+{\hat {\alpha }}+{\hat {\beta }})^{2}}}}...

HAT-P-19 is a K-type main-sequence star about 658 light-years away. The star is old yet metal enriched, having amount of heavy elements 250% of solar...

HAT-P-16 is a F-type main-sequence star about 725 light-years away. The star has a concentration of heavy elements slightly higher than solar abundance...

P Cygni (34 Cygni) is a variable star in the constellation Cygnus. The designation "P" was originally assigned by Johann Bayer in Uranometria as a nova...

{k}}={\hat {k}}-{\frac {1}{N}}\left(3{\hat {k}}-{\frac {2}{3}}\left({\frac {\hat {k}}{1+{\hat {k}}}}\right)-{\frac {4}{5}}{\frac {\hat {k}}{(1+{\hat {k}})^{2}}}\right)}...

\mathbf {p} =\mathbf {r} \times m\mathbf {v} =mr^{2}\left(-{\dot {\varphi }}\sin \theta \,\mathbf {\hat {\boldsymbol {\theta }}} +{\dot {\theta }}\,{\hat {\boldsymbol...