Quiz | Easy as Sunday morning: on frequencies and wavelengths
A Day in the Life is a song of Beatles released in 1967. At the end there are two important audio bits.
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1/9 | 440 Hz is a frequency that matches the pitch of music note ‘A’ in the middle of a standard piano. In 1975, the international organization made it standard for standardization. For what purpose did both US Time Station and BBC broadcast this 440 Hz signal every hour?
Answer: So that musicians can tune their equipment.
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2/9 | The wavelength of 625–750 nanometers in visible spectrum is one of the most easily recognizable colors. Being at the high end of the spectrum, it has the highest wavelength, which means that it can be seen further than others. What color does this wavelength conform to?
3/9 | The language comes from the word spoken, and it develops through the frequencies that are formed by vocal cords. A specific group of letters from the letter is mainly found in 2 KHz – 4 KHz range in all languages. What are these letters that are in that frequency because the vocal path is narrowed?
4/9 | Kongtong village in Meghalaya is built in many hilly areas. For hundreds of years, they have done a certain practice while naming a child, to ensure that they can be called in these areas. What is this high frequency practice?
Answer: Every child gets a signature whistle
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5/9 | A Day in the Life is a song of Beatles released in 1967. At the end there are two important audio bits. The first is a 40-second crastendo (which inspired the ThX note). This is followed by a 15-KHz tone, which man cannot hear, but can buy a device that can make a sound and call a pet. What did Paul Macartney use to make this tone?
Answer: Dog whistle, for your sheep dog
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6/9 | The orchestra of this brass instrument has two records. It is the largest and least means in the family of brass. What is its device to play 16Hz C in the Peace ‘Encounter II’ of William Craft, it is used (a note so low we can not hear but feel it)?
7/9 | This color is at the small end of the visible spectrum with a wavelength of 380–450 nanometers. It and its colors are historically associated with royalty, as it was a hard dye to make. What color is it, and what is the name given to dangerous wavelength?
8/9 | This section of light has a wavelength between 780 nm to 1 mm, and although we cannot see it, we experience it as heat. Most use it for remote control function. What is this radiation that is found on the spectrum, where it gets its own name?
9/9 | This optical phenomenon includes all wavelengths of visible spectrum between 380 and 700 nanometers. It is caused by entering the light and re-emitting at different angles close to 42 degrees. When this process occurs, is the eye -catching phenomenon?
