These are lines of equal wind speed. They are most often contoured in the upper levels of the atmosphere, especially at the jet stream level. They are important for locating the jet stream and jet streaks within a jet stream
Mostly from asteroid impacts. The moon has no atmosphere to impede an asteroid's approach, or to disturb the land contours after it has landed, so the craters remain permanently visible.
This depends on the fuels used (Liquid Oxygen, Hydrazine, etc) the design contours of the nozzles (if we are talking about liquid fuel rocket engines, and pressure pumps, turbo-chargers etc in the rocket body. The velocity of the rocket is dependent on a good many factors including the chemical reactions of the fuels themselves, the specific impulse as it is called, and as with autos, transmission losses due to plumbing and pipes.
Glasses are used to protect the eyes (such as radiation, anti-UV, anti-glare, etc.), Correction of nearsightedness, farsightedness, astigmatism and improve visual function, see clearer, eyes will not be so tired, Glasses can also be used to decorate the contours of the face, and so on The role of a variety of different glasses, such as sunglasses, polarized sunglasses, driver mirror, swimming goggles, anti eyepiece, myopia, reading glasses and so on!
A stadiscope is a device for enhancing 3D vision (and I don't know that I've had any verification that this is the right word). The only actual use I know of was in the US Army, for artillery reconnaissance, probably WWII era. I thought I had invented it until I saw one in a surplus store and later got information on it. A small version might also be especially helpful for small boats on a lake, where you want to improve 3D perception of the lake contours to determine your location. It consists of two "periscopes". (A periscope is an assembly of two prisms or mirrors which puts the line of vision above, below or to one side of direct-eye line of vision.) One periscope (even a toy or homemade) can be used as a stadiscope, though it introduces some 3D distortion. Hold the eyepiece up to the eye, with the 'far' end pointing horizontal, away from the nose. Be sure that the objective (far end) mirror is aligned so the view through the periscope is level with the direct view of the other eye, in other words, the mirrors are on parallel planes. If you study a scene, with both eyes, one through the stadiscope, say of scattered trees 50 - 200 yards away, you'll begin to see that some trees seem much closer than others, and even near limbs stand out from others. Then add another periscope for the other eye to double enhancement and get rid of distortion. Be sure it's view also lines up with direct vision, not just with the view through the first periscope. The Army version I've seen sits on a tripod and is combined with binocular lenses for magnification. It can be used as either periscope or stadiscope, with the periscope arms pointed up, to both sides or in-between.
Isotachs
The Contours ended in 1968.
The Contours was created in 1959.
The lines on a topographical map show the contours of the land.
A topographic map would show elevations and contours.
Contours can intersect if you have an overhang. If there is a vertical drop, the contours will touch but not cross one another.
Index contours can be identified by every 5th contour line and also because its darker and heavier
The Contours-1962
The contours of the water table lines are the same as the contours of other topographical lines. The only indication of water tables might be elevation lines but they are not unique to water tables.
answ2. Topographic contours of a large overhang could conceptually overlap, but convention merely prints them as congruent.
no
Contours and spot heights.