These aspects of waves are true not only for waves in which the direction of the disturbance (oscillation) is perpendicular to the wave motion, but also for waves in which the oscillation is along the direction of motion of the wave, as in sound waves.
"To the nines" is an English idiom meaning "to perfection" or "to the highest degree" or to dress "buoyantly and high class". In modern English usage, the phrase most commonly appears as "dressed to the nines" or "dressed up to the nines".
Mendelevium is a synthetic element with chemical symbol Md (formerly Mv) and atomic number 101. A metallic radioactive transuranic element in the actinide series, it is the first element that currently cannot be produced in macroscopic quantities through neutron bombardment of lighter elements. It is the third-to-last actinide and the ninth transuranic element. It can only be produced in particle accelerators by bombarding lighter elements with charged particles. A total of sixteen mendelevium isotopes are known, the most stable being 258Md with a half-life of 51 days; nevertheless, the shorter-lived 256Md (half-life 1.17 hours) is most commonly used in chemistry because it can be produced on a larger scale.
Comments
9.19
8.1 = 9