Температура- Temperature
Temperature is a physical property of matter that quantitatively expresses the common notions of hot and cold. Objects of low temperature are cold, while various degrees of higher temperatures are referred to as warm or hot. Quantitatively, temperature is measured with thermometers, which may be calibrated to a variety of temperature scales.
Much of the world uses the Celsius scale (°C) for most temperature measurements. It has the same incremental scaling as the Kelvin scale used by scientists, but fixes its null point, at 0°C = 273.15K, the freezing point of water.[note 1] A few countries, most notably the United States, use the Fahrenheit scale for common purposes, a historical scale on which water freezes at 32 °F and boils at 212 °F.
|
Масса- Weight
In most physics textbooks, weight is the name given to the force on an object due to gravity. However, some books use an operational definition, defining the weight of an object as the force measured by the operation of weighing it (that is, the force required to support it). Both definitions imply that weight is a force and that its value depends on the local gravitational field. For example, an object with a mass of one kilogram will have a weight of 9.8 newtons on the surface of the Earth, about one-sixth as much on the Moon, and zero when floating freely far out in space away from all gravitational influence. The differences between the two definitions are discussed below. For example, they differ over the weight of an object in free fall, such as a falling apple or an astronaut in an orbiting spacecraft. In these cases, the operational definition implies the weight is zero, whereas the gravitational definition does not.
|
|
Вақт- Time
ime is a part of the measuring system used to sequence events, to compare the durations of events and the intervals between them, and to quantify rates of change such as the motions of objects. The temporal position of events with respect to the transitory present is continually changing; future events become present, then pass further and further into the past. Time has been a major subject of religion, philosophy, and science, but defining it in a non-controversial manner applicable to all fields of study has consistently eluded the greatest scholars.
|
Do'stlaringiz bilan baham: |
