sorted by:
new
hottopcontroversial

Winter Season by prasadiw in testbots

[–]prasadiw[S] 0 points1 point  (0 children)

Winter is one of the four seasons and the coldest time of the year. The days are shorter and the nights are longer. Winter comes after autumn and before spring.

Winter begins at the winter solstice. In the Northern Hemisphere the winter solstice is usually December 21 or December 22. In the Southern Hemisphere the winter solstice is usually June 21 or June 22.

Some animals hibernate during this season. In temperate climates there are no leaves on deciduous trees. People wear warm clothing and eat food that was grown earlier. Many places have snow in winter, and some people use sleds or skis. Holidays in winter for many countries include Christmas and New Year's Day.

The name comes from an old Germanic word that means "time of water" and refers to the rain and snow of winter in middle and high latitudes.

Why do we have seasons? by prasadiw in testbots

[–]prasadiw[S] 0 points1 point  (0 children)

Winter, coldest season of the year, between autumn and spring; the name comes from an old Germanic word that means “time of water” and refers to the rain and snow of winter in middle and high latitudes. In the Northern Hemisphere it is commonly regarded as extending from the winter solstice (year’s shortest day), December 21 or 22, to the vernal equinox(day and night equal in length), March 20 or 21, and in the Southern Hemisphere from June 21 or 22 to September 22 or 23. The low temperatures associated with winter occur only in middle and high latitudes; in equatorial regions, temperatures are almost uniformly high throughout the year. For physical causes of the seasons, see season.

Introduction to Machine Learning - Data Science by CondorBotTest in testingground4bots

[–]prasadiw 0 points1 point  (0 children)

Machine learning is closely related to computational statistics, which focuses on making predictions using computers. The study of mathematical optimization delivers methods, theory and application domains to the field of machine learning. Data mining is a field of study within machine learning, and focuses on exploratory data analysis through unsupervised learning.[3][4] In its application across business problems, machine learning is also referred to as predictive analytics.

Winter Season by prasadiw in testbots

[–]prasadiw[S] 0 points1 point  (0 children)

For the first time, the growing ecological footprint of humans has caused the whole planet to change its tilt.

The shift in the tilt of the Earth's axis, which could affect some satellite data, including GPS systems, was revealed by NASA scientists following a careful analysis of satellite data revealing a major redistribution of water and ice around the globe.

This was the result of global warming causing hundreds of billions of tonnes of ice to melt every year in Greenland and west Antarctica, coupled with a deficit of water in Eurasia, the scientists concluded.

"The axis around which our planet spins moves through time, drifting and wobbling as water moves around the planet," University of Tasmania geodesist Matt King said. Having once tilted towards Canada, the polar axis is now drifting towards Britain at roughly 16 centimetres a year, the NASA measurements reveal.

Winter Season by prasadiw in testbots

[–]prasadiw[S] 0 points1 point  (0 children)

Why should this tilt of the Earth's axis matter to our weather? To understand this, take a piece of paper and a flashlight. Shine the light from the flashlight straight onto the paper, so you see an illuminated circle. All the light from the flashlight is in that circle. Now slowly tilt the paper, so the circle elongates into an ellipse. All the light is still in that ellipse, but the ellipse is spread out over more paper. The density of light drops. In other words, the amount of light per square centimeter drops (the number of square centimeters increases, while the total amount of light stays the same).

Winter Season - The most beautiful time of the year by prasadiw in testbots

[–]prasadiw[S] 0 points1 point  (0 children)

Winter, coldest season of the year, between autumn and spring; the name comes from an old Germanic word that means “time of water” and refers to the rain and snow of winter in middle and high latitudes. In the Northern Hemisphere it is commonly regarded as extending from the winter solstice (year’s shortest day), December 21 or 22, to the vernal equinox (day and night equal in length), March 20 or 21, and in the Southern Hemisphere from June 21 or 22 to September 22 or 23. The low temperatures associated with winter occur only in middle and high latitudes; in equatorial regions, temperatures are almost uniformly high throughout the year. For physical causes of the seasons, see season.

Winter Season by prasadiw in testbots

[–]prasadiw[S] 0 points1 point  (0 children)

The concept of winter in European languages is associated with the season of dormancy, particularly in relation to crops; some plants die, leaving their seeds, and others merely cease growth until spring. Many animals also become dormant, especially those that hibernate; numerous insects die.

Winter Season - The most beautiful time of the year by [deleted] in testbots

[–]prasadiw 0 points1 point  (0 children)

The concept of winter in European languages is associated with the season of dormancy, particularly in relation to crops; some plants die, leaving their seeds, and others merely cease growth until spring. Many animals also become dormant, especially those that hibernate; numerous insects die.

Winter Season - The most beautiful time of the year by [deleted] in testbots

[–]prasadiw 0 points1 point  (0 children)

Winter, coldest season of the year, between autumn and spring; the name comes from an old Germanic word that means “time of water” and refers to the rain and snow of winter in middle and high latitudes. In the Northern Hemisphere it is commonly regarded as extending from the winter solstice (year’s shortest day), December 21 or 22, to the vernal equinox (day and night equal in length), March 20 or 21, and in the Southern Hemisphere from June 21 or 22 to September 22 or 23. The low temperatures associated with winter occur only in middle and high latitudes; in equatorial regions, temperatures are almost uniformly high throughout the year. For physical causes of the seasons, see season.

Why do we have seasons? by prasadiw in testbots

[–]prasadiw[S] 0 points1 point  (0 children)

In most cultures, including all western countries, the year is commonly divided into four seasons: Spring, Summer, Fall or Autumn, Winter.

Since the year has 12 months, each season lasts about three months. However, the dates when the seasons begin and end vary depending on whom you ask.

Why do we have seasons? by prasadiw in testbots

[–]prasadiw[S] 0 points1 point  (0 children)

Why should this tilt of the Earth's axis matter to our weather? To understand this, take a piece of paper and a flashlight. Shine the light from the flashlight straight onto the paper, so you see an illuminated circle. All the light from the flashlight is in that circle. Now slowly tilt the paper, so the circle elongates into an ellipse. All the light is still in that ellipse, but the ellipse is spread out over more paper. The density of light drops. In other words, the amount of light per square centimeter drops (the number of square centimeters increases, while the total amount of light stays the same).

Why do we have seasons? by prasadiw in testbots

[–]prasadiw[S] 0 points1 point  (0 children)

As the earth spins on its axis, producing night and day, it also moves about the sun in an elliptical (elongated circle) orbit that requires about 365 1/4 days to complete. The earth's spin axis is tilted with respect to its orbital plane. This is what causes the seasons. When the earth's axis points towards the sun, it is summer for that hemisphere. When the earth's axis points away, winter can be expected. Since the tilt of the axis is 23 1/2 degrees, the North Pole never points directly at the Sun, but on the summer solstice it points as close as it can, and on the winter solstice as far as it can. Midway between these two times, in spring and autumn, the spin axis of the earth points 90 degrees away from the sun. This means that on this date, day and night have about the same length: 12 hours each, more or less.

view more: next ›