docx: Geo Magnetic Journal
... 2. Draw and describe the following: When two magnets have the same poles (north/north or south/south) toward each other what happens? Why? (label: poles and magnetic field) ...
... 2. Draw and describe the following: When two magnets have the same poles (north/north or south/south) toward each other what happens? Why? (label: poles and magnetic field) ...
Anticipation Guide: Electricity from Magnetism
... Anticipation Guide: Electricity from Magnetism Before Reading: In the space to the left of each statement, place a check mark () if you agree or think the statement is true or an (X) if you disagree or think the statement is false. During or After Reading: Add new check marks or cross-through the X ...
... Anticipation Guide: Electricity from Magnetism Before Reading: In the space to the left of each statement, place a check mark () if you agree or think the statement is true or an (X) if you disagree or think the statement is false. During or After Reading: Add new check marks or cross-through the X ...
magnet Any material that attracts iron and materials that contain iron
... found outside the nucleus of an atom. ...
... found outside the nucleus of an atom. ...
Magnetism - Howard Elementary School
... repel and opposites attract, and the force between is inversely proportional to the distance between them. This means that closer is stronger, and further is weaker. Electric charges are positive or negative, magnetic poles are north or south. One main difference is that magnetic poles cannot be iso ...
... repel and opposites attract, and the force between is inversely proportional to the distance between them. This means that closer is stronger, and further is weaker. Electric charges are positive or negative, magnetic poles are north or south. One main difference is that magnetic poles cannot be iso ...
Today: Oscilloscope and Faraday’s Law
... wire. The resulting current in the coil made it act like a magnet. In other words a current can produce an magnetic field – evidence that electricity and magnetism are connected. Q. Can a magnetic field produce a current? A. Yes… but it is not as easy. A constant magnetic field cannot produce a curr ...
... wire. The resulting current in the coil made it act like a magnet. In other words a current can produce an magnetic field – evidence that electricity and magnetism are connected. Q. Can a magnetic field produce a current? A. Yes… but it is not as easy. A constant magnetic field cannot produce a curr ...
reversing the current
... If current flows through a wire, it can create a______ ______ (two words). ...
... If current flows through a wire, it can create a______ ______ (two words). ...
Cynthia Saad - American University of Beirut
... The process of star formation is a challenging astrophysical process, since diverse physical processes are involved. The talk will focus on magnetically supported low mass clouds. The magnetic field supports a stellar cloud against gravitational collapse. But loss of magnetic field from the initial ...
... The process of star formation is a challenging astrophysical process, since diverse physical processes are involved. The talk will focus on magnetically supported low mass clouds. The magnetic field supports a stellar cloud against gravitational collapse. But loss of magnetic field from the initial ...
Document
... 10. Electromagnetic Induction Faraday’s law If a magnetic field changes in time there is an induced electric field. In differential form, the field equation is B E t which is called Faraday’s Law. In integral form, ...
... 10. Electromagnetic Induction Faraday’s law If a magnetic field changes in time there is an induced electric field. In differential form, the field equation is B E t which is called Faraday’s Law. In integral form, ...
Week 2: Current and Intro to Circuits
... • How do they work? • What effects do they have on us? ...
... • How do they work? • What effects do they have on us? ...
Magnetic Resonance Imaging
... • Permanent: need no electricity, extremely heavy (many tons) • Superconducting: most commonly used, same as resistive except wires are soaked in -452.4°F liquid helium to lower resistance to zero ...
... • Permanent: need no electricity, extremely heavy (many tons) • Superconducting: most commonly used, same as resistive except wires are soaked in -452.4°F liquid helium to lower resistance to zero ...
Magnetism 4 Electromagnets
... Discovered that an electric current causes a magnetic field How? Connected a series circuit and turned on the power. A nearby compass moved! ...
... Discovered that an electric current causes a magnetic field How? Connected a series circuit and turned on the power. A nearby compass moved! ...
Ferrofluid
A ferrofluid (portmanteau of ferromagnetic and fluid) is a liquid that becomes strongly magnetized in the presence of a magnetic field.Ferrofluid was invented in 1963 by NASA's Steve Papell as a liquid rocket fuel that could be drawn toward a pump inlet in a weightless environment by applying a magnetic field.Ferrofluids are colloidal liquids made of nanoscale ferromagnetic, or ferrimagnetic, particles suspended in a carrier fluid (usually an organic solvent or water). Each tiny particle is thoroughly coated with a surfactant to inhibit clumping. Large ferromagnetic particles can be ripped out of the homogeneous colloidal mixture, forming a separate clump of magnetic dust when exposed to strong magnetic fields. The magnetic attraction of nanoparticles is weak enough that the surfactant's Van der Waals force is sufficient to prevent magnetic clumping or agglomeration. Ferrofluids usually do not retain magnetization in the absence of an externally applied field and thus are often classified as ""superparamagnets"" rather than ferromagnets.The difference between ferrofluids and magnetorheological fluids (MR fluids) is the size of the particles. The particles in a ferrofluid primarily consist of nanoparticles which are suspended by Brownian motion and generally will not settle under normal conditions. MR fluid particles primarily consist of micrometre-scale particles which are too heavy for Brownian motion to keep them suspended, and thus will settle over time because of the inherent density difference between the particle and its carrier fluid. These two fluids have very different applications as a result.