ResonanceResonance describes the phenomenon of increased amplitude that occurs when the frequency of an applied periodic force (or a Fourier component of it) is equal or close to a natural frequency of the system on which it acts. When an oscillating force is applied at a resonant frequency of a dynamic system, the system will oscillate at a higher amplitude than when the same force is applied at other, non-resonant frequencies. Frequencies at which the response amplitude is a relative maximum are also known as resonant frequencies or resonance frequencies of the system.
Jawi scriptJawi (; Jawoë; Kelantan-Pattani: Yawi; d͡ʒä.wi) is a writing system used for writing Malay and several languages of Southeast Asia, such as Acehnese, Banjarese, Kerinci, Maguindanaon, Minangkabau, Tausūg, and Ternate. Jawi is based on the Arabic script, consisting of all of the original 31 Arabic letters, and six additional letters constructed to fit the phonemes native to Malay, and an additional phoneme used in foreign loanwords, but not found in Classical Arabic, which are ca /t͡ʃ/, nga /ŋ/, pa /p/, ga /ɡ/, va /v/, and nya /ɲ/.
Molar massIn chemistry, the molar mass (M) of a chemical compound is defined as the ratio between the mass and the amount of substance (measured in moles) of any sample of said compound. The molar mass is a bulk, not molecular, property of a substance. The molar mass is an average of many instances of the compound, which often vary in mass due to the presence of isotopes. Most commonly, the molar mass is computed from the standard atomic weights and is thus a terrestrial average and a function of the relative abundance of the isotopes of the constituent atoms on Earth.
Riau IslandsThe Riau Islands (Kepulauan Riau) is a province of Indonesia. The capital of the province is Tanjung Pinang and the largest city is Batam. It shares a maritime border with Riau and Jambi to the east, Bangka Belitung Islands to the south, Singapore to the northeast, Malaysia and West Kalimantan to the west, and Vietnam and Cambodia to the north. It also shares a maritime border with the municipality of Kalayaan in the province of Palawan of the Philippines to the east.
VibrationVibration () is a mechanical phenomenon whereby oscillations occur about an equilibrium point. The oscillations may be periodic, such as the motion of a pendulum, or random, such as the movement of a tire on a gravel road. Vibration can be desirable: for example, the motion of a tuning fork, the reed in a woodwind instrument or harmonica, a mobile phone, or the cone of a loudspeaker. In many cases, however, vibration is undesirable, wasting energy and creating unwanted sound.
HangulThe Korean alphabet, known as Hangul (ˈhɑːnguːl ; ) in South Korea and Chosŏn'gŭl () in North Korea, is the modern official writing system for the Korean language. The letters for the five basic consonants reflect the shape of the speech organs used to pronounce them, and they are systematically modified to indicate phonetic features; similarly, the vowel letters are systematically modified for related sounds, making Hangul a featural writing system.
Malays (ethnic group)Malays (Orang Melayu, Jawi: أورڠ ملايو) are an Austronesian ethnic group native to eastern Sumatra, the Malay Peninsula and coastal Borneo, as well as the smaller islands that lie between these locations. These locations are today part of the countries of Malaysia, Indonesia (eastern and southern Sumatra, Bangka Belitung Islands, West Kalimantan and Riau Islands), southern part of Thailand (Pattani, Satun, Songkhla, Yala and Narathiwat), Singapore and Brunei Darussalam.
MassMass is an intrinsic property of a body. It was traditionally believed to be related to the quantity of matter in a physical body, until the discovery of the atom and particle physics. It was found that different atoms and different elementary particles, theoretically with the same amount of matter, have nonetheless different masses. Mass in modern physics has multiple definitions which are conceptually distinct, but physically equivalent.
Vladimir Putin'Vladimir Vladimirovich Putin' (born 7 October 1952) is a Russian politician and former intelligence officer who has served as President of Russia since 2012. Putin has held continuous positions as president or prime minister since 1999: as prime minister from 1999 to 2000 and from 2008 to 2012, and as president from 2000 to 2008 and since 2012. Putin worked as a KGB foreign intelligence officer for 16 years, rising to the rank of lieutenant colonel before resigning in 1991 to begin a political career in Saint Petersburg.
InkInk is a gel, sol, or solution that contains at least one colorant, such as a dye or pigment, and is used to color a surface to produce an , text, or design. Ink is used for drawing or writing with a pen, brush, reed pen, or quill. Thicker inks, in paste form, are used extensively in letterpress and lithographic printing. Ink can be a complex medium, composed of solvents, pigments, dyes, resins, lubricants, solubilizers, surfactants, particulate matter, fluorescents, and other materials.
