Altitude is the distance above ground-level that an object is, in a vertical direction (that is, directly away from the centre of the Earth). If this is negative then the object is below ground-level, so it is underground.
Electrons can move from object to object. Electrons have a negative charge. So if an object is determined to have a positive charge, then some of the electrons have moved from the object to somewhere else. Something with a neutral charge has the same number of electrons [-] and protons [+]. If electrons [-] leave, then there will be more protons, and a net positive charge. If an object gains electrons, then the object has a net negative charge.
Elevation, altitude, height above sea level.
Altitude
Geopotential altitude is a measure of height above a reference level in the Earth's atmosphere that takes into account the variation of gravitational acceleration with altitude. It provides a more accurate representation of the vertical position of an object in the atmosphere compared to geometric altitude, which does not account for variations in gravity. Geopotential altitude is commonly used in aviation and meteorology to standardize altitude measurements.
It seems there was a typo in your question. Altitude is the height of an object above a reference point on the Earth's surface, such as sea level. Please provide more context or correct the error for a more accurate response.
Altitude describes an object's position relative to sea level. An object in a position higher than sea level would have a positive altitude, sea level would have an altitude of zero, and any object below sea level would have a negative altitude.
According to Wikipedia:"As a general definition, altitude is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object." ['down' is measured as depth.]If you're discussing flying altitude, it probably cannot be negative, because the reference point is the ground.In a geography which is below sea level, you could describe the altitude as negative, but more properly, you'd describe the elevation not the altitude.(The Mojave Desert and New Orleans, Louisiana, in America both have elevations below sea level.)
The altitude of an object in the sky is the angular distance of the object above the observer's horizon. It is measured in degrees or radians from the horizon to the object.
Yes, that is correct. Altitude above sea level, for example, is negative or positive - if you are below sea level, a negative number will be used.
I KNOW FROM MY mind that altitude means going up.
No it does not. Its weight, however, does.
To determine the altitude of an object in the sky using an astrolabe, you would align the sighting arm with the object. Then, you would read the degree scale on the astrolabe where the sighting arm intersects it. This reading would give you the altitude of the object above the horizon.
An altitude of a three-dimensional object refers to the perpendicular distance from the base of the object to its highest point. In the context of specific shapes, such as a pyramid or a cone, the altitude is the segment that connects the apex to the base at a right angle. This measurement is crucial for calculating the volume and understanding the object's geometry. Overall, altitude provides insight into the object's height relative to its base.
No, density altitude cannot be negative. Density altitude is a measure of air density relative to standard atmospheric conditions, and it is calculated by adjusting the pressure altitude for temperature and humidity. Since altitude itself cannot be less than zero, density altitude will always be a positive value, indicating how the air density compares to the standard atmosphere at a given altitude and temperature.
altitude
An altitude of a three-dimensional object refers to the vertical height of the object measured from its base to its topmost point. In the context of geometric shapes, such as a prism or pyramid, the altitude is the perpendicular distance from the base to the apex or top face. This measurement is crucial for determining the volume and surface area of the object.
Altitude is the angle measured above the horizon.