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  2. Negative-index metamaterial - Wikipedia

    en.wikipedia.org/wiki/Negative-index_metamaterial

    This means that when permeability is less than zero, e.g. negative, wave propagation is reversed (determined by k), and contrary to the direction of energy flow. Furthermore, the relations of vectors E , H , and k form a " left-handed" system – and it was Veselago who coined the term "left-handed" (LH) material, which is in wide use today (2011).

  3. Negative number - Wikipedia

    en.wikipedia.org/wiki/Negative_number

    This thermometer is indicating a negative Fahrenheit temperature (−4 °F).. In mathematics, a negative number is the opposite of a positive real number. [1] Equivalently, a negative number is a real number that is less than zero.

  4. Z-matrix (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Z-matrix_(mathematics)

    In mathematics, the class of Z-matrices are those matrices whose off-diagonal entries are less than or equal to zero; that is, the matrices of the form: = ();,. Note that this definition coincides precisely with that of a negated Metzler matrix or quasipositive matrix, thus the term quasinegative matrix appears from time to time in the literature, though this is rare and usually only in ...

  5. List of types of numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_types_of_numbers

    Negative numbers: Real numbers that are less than zero. Because zero itself has no sign, neither the positive numbers nor the negative numbers include zero. When zero is a possibility, the following terms are often used: Non-negative numbers: Real numbers that are greater than or equal to zero. Thus a non-negative number is either zero or positive.

  6. The Most Popular Baby Boy Names of 2025 Are Really Unexpected

    www.aol.com/lifestyle/most-popular-baby-boy...

    Cowboy Names Go Next-Level. Call it the Yellowstone effect. "One of the biggest trends we’ll see for baby boy names in 2025 are 'Country Rebrand' names," says Sophie Kihm, editor-in-chief of ...

  7. Elle a 'perfect addition' at new forever home after 1,000 ...

    www.aol.com/elle-perfect-addition-forever-home...

    After spending more than 1,000 days at an animal shelter in Texas, a six-year-old boxer mix finally found a loving home and was given a grand farewell as she bid goodbye to the shelter which has ...

  8. Chemical potential - Wikipedia

    en.wikipedia.org/wiki/Chemical_potential

    [1] [2] At chemical equilibrium or in phase equilibrium, the total sum of the product of chemical potentials and stoichiometric coefficients is zero, as the free energy is at a minimum. [ 3 ] [ 4 ] [ 5 ] In a system in diffusion equilibrium, the chemical potential of any chemical species is uniformly the same everywhere throughout the system.

  9. Gilgeous-Alexander scores 39 as Thunder beat Mavericks ... - AOL

    www.aol.com/gilgeous-alexander-scores-39-thunder...

    Shai Gilgeous-Alexander scored 39 points, and the Oklahoma City Thunder beat the Dallas Mavericks 118-104 on Tuesday night in an NBA Cup quarterfinal. Jalen Williams scored 18 points and Isaiah ...