I'm not sure I understand what your asking, but if I do know, its because the sun stays in one place (at least for the time being), and no matter what direction you turn your shadow will point the same direction. If I actually have no idea what you're asking, try clarifying a little more and I'll try again.
In order to have a shadow, you need a source of light, an object to block that light, and a surface on which the shadow is cast. When light is obstructed by an object, it creates a shadow on the surface opposite the light source.
To see Earth's shadow on Earth, you would need to be at a high vantage point during a time when the sun is low on the horizon, such as at sunrise or sunset. As the sun sets or rises, Earth's shadow is cast onto the atmosphere opposite the direction of the sun, creating a dark band visible in the sky.
To see a shadow, you need a source of light, an object to cast the shadow, and a surface for the shadow to be projected onto. When the light is blocked by the object, a shadow is created on the surface opposite the light source.
You need the compass direction to tell you direction. The sun usually rises from the east. The south is usually directly opposite the north.
The nozzel tubes need to be turned the opposite direction
To change the direction of bike pedals, you need to unscrew them in the opposite direction. To remove them, use a pedal wrench or Allen key to loosen the pedal spindle and then unscrew it completely.
To balance forces acting on an unbalanced object, you need to apply an additional force in the opposite direction to the unbalanced force. This new force should have the same magnitude as the unbalanced force but act in the opposite direction to cancel it out. By applying this balancing force, the object will no longer accelerate in the direction of the unbalanced force.
An electrical double wrapped cross joint is just like an ordinary cross joint but double wrapped with electrical tape. It is used where two tap conductors need to extend away from the branch conductor in the opposite direction and is stronger than the ordinary cross joint.
Sure can! You just need to turn the tumbler in the opposite direction you turned it to open it.
The tail rotor is moving "perpendicular" to the main rotor, not "opposite". The tail rotor creates thrust opposite to the thrust of the main rotor, to keep the fuselage from spinning. Most helicopters spin the main rotor counter-clockwise looking from above, which puts a clockwise rotation on the fuselage. You need a tail rotor pushing the tail counter-clockwise to keep the fuselage pointed in the direction the pilot chooses.
You must first choose which direction you shall call positive, thereby the opposite direction shall be negative. Then you add these two values together to get your answer, the total net force.
When adding forces acting in different directions, you need to consider both the direction and magnitude of each force. If the forces are acting in opposite directions, you need to subtract the force in one direction from the force in the other direction to find the resultant force. In this context, the Newton is a unit of force, not a mathematical operation.