How many minutes and seconds is 4.43?

4.43 hours =4h+0.43X60 minutes/hour =4h+25.8 minutes = 4h25min +0.8 x60s/ minute = 4h25min +48s.

= minutes and 48 seconds

Time unit is one of the seven basic units. The following are common time units, in descending order:

Galaxy year

Galactic year (GY), also known as cosmic year, is the time when the solar system orbits the center of the Milky Way, which is estimated to be between 225 million and 250 million "Earth years".

Millennium

Millennium is a time span that spans a thousand years. In the solar calendar, if a year is divisible by 1000, it is called Millennium (or the year after that).

hundred years

A century is a hundred years, which usually means a hundred years in a row.

age

We divide a century into 10 units, 1 unit, 10 year, and every 10 year is called 1 year. At the same time, age is often suitable for the use of advertising calendars.

Annual editor

A year is a unit of time in which events related to the earth's revolution around the sun in orbit occur repeatedly.

Generally speaking, the length of a year is taken as the time interval from a certain punctuation to the same punctuation on the celestial sphere along the ecliptic.

Since 1984, Julian year (not to be confused with julian calendar in the calendar) has been adopted as a unified year unit in astronomy, and it is stipulated as 365.2425 days, with an error of 1 day every 3000 years compared with the tropical year.

In the modern Gregorian calendar, the average year is 365 days (including 52 weeks 1 day), and the leap year is 366 days (including 52 weeks and 2 days).

Bessel years

A sidereal year is a period of motion with a fixed point on the celestial sphere (such as a distant star) as the reference object, which is used in astronomy rather than calendar.

tropical year

Tropic of Cancer is the time interval when the sun center passes through the vernal equinox (or autumnal equinox, winter solstice and summer solstice) twice in a row on the ecliptic, that is, the time interval when the sun directly hits the Tropic of Cancer (or Tropic of Cancer) twice in a row. Therefore, the tropical year is also called the "season year". The tropic year is slightly shorter than the sidereal year, and its period is 365 days, 5: 48: 46. Applied to the calculation of solar and lunar eclipses.

In recent years

The earth's orbit around the sun is an elliptical orbit that approximates a perfect circle. The time interval when the center of the earth passes through the perihelion (or apohelion) in orbit twice in succession is the change period of the revolution speed of the earth.

the Year of the Loong

The year of intersection is the time required for the sun to pass through the same yellow-white intersection twice along the ecliptic, and its length is 346.6200 days. Because the intersection of yellow and white moves 20 degrees to the west every year, the intersection year is correspondingly shorter than the sidereal year. It was shortened by about 20 days. The year of intersection is also called the year of eclipse, which is named because it is related to the causes of eclipses on the same day.

one quarter

Commonly known as "quarter", it is to divide a year into four parts on average. According to the order of spring, summer, autumn and winter, a year can be divided into four quarters, and each quarter lasts for three months.

moon

A month is a unit of time in a calendar. It is assumed that its length should be equivalent to the natural orbital period of the moon's orbit around the earth, but traditionally the period of the moon's phase change is taken as the length of one month, that is, the length of one month (lunar month) is the rendezvous month (Wang Shuoyue), which is about 29.53 days.

Ten days.

Ten days, originally meant ten days. The concept of ten-day has existed since Xia Dynasty, and there are also ten-day characters in Oracle Bone Inscriptions. In ancient China, the drought was repeated every ten days, which was called ten days. So use a word "ten days" to express this concept of time.

week

Week, also called week or worship, is a unit of time created by the ancient Babylonians, and a week is seven days.

wait for

In ancient times, five days was called "first class";

It is still used in meteorology: ~ temperature (average temperature every five days);

There are 24 solar terms and 72 seasons in a year.

sun

The sun is a unit of time for measuring the rotation of planets. It is often called heaven in spoken language.

A solar day is about 24 hours.

A sidereal day is equal to 23 hours, 56 minutes and 4.09894 seconds.

solar day

Solar Day has two concepts. One is the concept of folklore, which refers to the birthday of the sun. It's June 19th of the lunar calendar, which is recorded in the Yellow Calendar. Second, it refers to the "Japanese Obsidian Day" in China's ancient "Seven Obsidian Days", which coincides with the western Sunday. In astronomy, solar day refers to the time it takes for the earth to face the sun twice when the same meridian approaches.

sidereal day

The straight line connecting two points due south and north of a place is the meridian, and the plane defined by the meridian and the plumb line is the meridian plane in the direction due south and north. The time interval when the astronomical meridian plane faces the same star twice is called sidereal day, and sidereal day is the rotation period of the earth based on the star.

In astronomy, it is not a specific star that defines sidereal day, but the rising intersection of the ecliptic and the celestial equator, which is the first point of Aries, that is, vernal equinox in the northern hemisphere. But the vernal equinox is moving westward (precession), so there is still a difference between astronomical sidereal day and solar day.

Sidereal day is shorter than the solar day.

small

An hour is a unit of time. The hour is not the basic unit of the international system of time units (the basic unit of the international system of time units is seconds), but an auxiliary unit of time coordinated with the basic unit of the international system of units. Except leap second, one hour is generally equal to 3600 seconds, or 60 minutes, or 1/24 days. "H" is often used in English or mathematics.

minute

Minutes, also called minutes, are units of time. Minute is English, which means "tiny" and also means min. Engraving = 15 minutes, word =5 minutes (usage in southern Fujian and Guangdong).

second

Seconds is the basic unit of time in the international system of units, with the symbol S, sometimes marked with English abbreviations as sec.

The prefix of the international system of units is often combined with seconds to make a finer division, such as ms (millisecond, thousandth of a second), us (microsecond, millionth of a second) and ns (nanosecond, billionth of a second). Although the international unit prefix system can also be used to extend time, such as ks (thousands of seconds), Ms (millions of seconds) and Gs (billions of seconds), it is rarely used in this way, and people are still used to using 60-decimal minutes, hours and 24-decimal days as the extension of seconds.

millisecond

Millisecond is a relatively small unit of time, which is one thousandth of a second (0.00 1 second), or ms for short. The minimum exposure time of a typical camera is one millisecond. A housefly flaps its wings every three milliseconds; Mosquitoes flap their wings every 20 milliseconds; Bees flap their wings every five milliseconds. Because the moon's orbit around the earth is gradually widening, it takes two milliseconds more for it to make a circle every year. In computer science, the interval of 10 millisecond is called an instant.

microsecond

The microsecond is one millionth of a second (10 minus 6 seconds), or μs for short.

nanosecond

A nanosecond is one billionth of a second (10 minus 9 seconds), or ns for short.

picosecond

Picosecond is one thousandth of a nanosecond (10 minus 12 seconds), or ps for short. The fastest transistor runs in picoseconds. A rare subatomic particle B quark produced by high-energy accelerator can exist 1 picosecond before decay. The average existence time of hydrogen bonds between water molecules at room temperature is 3 picoseconds.

femtosecond

Femtosecond is also called femtosecond, that is, 10 minus 15 seconds, or fs for short. It is the unit of measurement for measuring the length of time. 1 femtosecond is only one thousandth of 1 second, which is 0.005438+0 picosecond.

One second

A second is also called a second and millisecond, which is equivalent to 10 minus 18 seconds, or simply referred to as. Is the shortest measurable time, the lifetime of neutral π meson. If the age of the universe is tens of billions of years, then the negative 18 times of 10 is equivalent to 1 second. Scientists use attosecond to record instantaneous events. The researchers used a stable high-speed laser to generate light pulses with a duration of only 250 attosecond.

One thousandth of a second

Zeptosecond, that is, 10 minus 2 1 second, referred to as zs.

moment

Jiffy, also called short time, is an informal term. Physically, it is about three times the negative 24 seconds of 10.

YS

YS(yoctosecond), that is, 10 minus 24 seconds. 0.3ys is the lifetime of W and Z bosons, and 23ys is the half-life of hydrogen isotopes.

Planck constant

Planck's constant is about 10 34 seconds, which is considered as the shortest possible time.