The magnetic compass somehow makes use of Earth's magnetic field, much the way a standard compass does. 磁罗盘在某种程度上利用的是地球磁场,差不多像标准罗盘仪那样。 But to prove this, we would have to find some kind of magnetic sensory organ in birds. And we are not sure that we have....
How is the direction of a magnetic field determined? How does Earth's magnetic field flip? What is a magnet? "It turns out that electric fields are what is produced when charges are locked in place, as in not moving. And magnetic fields are what we get when charges begin to move."...
Some animals can easily find their way home after a long journey.How do they make it?Scientific research shows that they are born with certain unusual abilities for direction. A certain kind of ants,for example,can count their steps to avoid getting lost.They can go as far as 110 metres ...
With regards to an electric field, how do you determine the magnitude and direction of the field at a given point? What is the magnitude and direction of the electric field? What is the direction of the electric field at the dot? What is the direction of the uniform electric...
huge bar magnet, creating a relatively weak magnetic field. The force of that magnetic field has a horizontal component in the direction of magnetic north. A compass needle is magnetized and freely suspended to allow that horizontal force to pull it toward magnetic north as well [source:Curtis]...
Then you can move the magnet in and out by changing the direction of the magnetic field in the solenoid. Please be careful if you try placing a magnet in your solenoid, as the magnet can shoot out. How do I know there's really a magnetic field? You can look at a wire's magnetic ...
Rather than canceling one another out, the microscopic magnetic fields combine to create one large magnetic field. The more domains point in the same direction, the stronger the overall field. Each domain's magnetic field extends from its north pole into the south pole of the domain ahead of ...
These hydrogen atoms have a strong magnetic moment, which means that in a magnetic field, they line up in the direction of the field. Since the magnetic field runs straight down the center of the machine, the hydrogen protons line up so that they're pointing to either the patient's feet...
Then you can move the magnet in and out by changing the direction of the magnetic field in the solenoid. Please be careful if you try placing a magnet in your solenoid, as the magnet can shoot out. How do I know there's really a magnetic field? You can look at a wire's magnetic ...
Magnetic fields are the results of force created around the nucleus of the magnetic material and in the direction of the field lines. Generally, the area around the magnetic material or the region that influences the electric charges in motion represents the magnetic field of that material. By ...