FIELD: physics.
SUBSTANCE: clock with indication of periods of the day, having a clock face, a clock mechanism and an arrow mechanism, comprises a mechanical means of indicating periods of the day with possibility of cyclic change of colour, colour intensity or colour brightness of all or a large part of the clock face according to the cyclic alternation of periods of the day, e.g., according to the cyclic alternation of periods of the day before noon and after noon, day and night, light and dark time of the day, morning, day, evening and night.
EFFECT: easy manufacture and reliability of clocks with ordinary 12- or 24-hour division of the clock face, which enable, without extra indicators on the clock face and without detriment to the readability of the current time on the clock face, to show with a different colour or different colour combinations different periods of the day - before noon and after noon, day-night, morning-day-evening-night - for clear and unambiguous demarcation of day hours from night hours without errors associated with indication on ordinary clock faces different values of hours in different periods of the day with the same numbers, signs or symbols, when indicating periods of the day on a clock face of a clock, comprising a clock face, a clock mechanism, an arrow mechanism and a mechanical means of indicating periods of the day, the mechanical means of indicating periods of the day configured for cyclic change of colour, colour intensity or colour brightness of all or a large part of the clock face according to the cyclic alternation of periods of the day, eg, according to the cyclic alternation of periods of the day before noon and after noon, day and night, light and dark time of the day, or morning, day, evening and night.
32 cl, 14 dwg
