From: owner-ammf-digest@smoe.org (alt.music.moxy-fruvous digest) To: ammf-digest@smoe.org Subject: alt.music.moxy-fruvous digest V14 #12208 Reply-To: ammf@fruvous.com Sender: owner-ammf-digest@smoe.org Errors-To: owner-ammf-digest@smoe.org Precedence: bulk alt.music.moxy-fruvous digest Wednesday, September 13 2023 Volume 14 : Number 12208 Today's Subjects: ----------------- For men and women who want to get rid of their texting neck, fix their posture in order to move, sleep and breathe better [] ---------------------------------------------------------------------- Date: Wed, 13 Sep 2023 21:12:40 +0200 From: "Text Neck" Subject: For men and women who want to get rid of their texting neck, fix their posture in order to move, sleep and breathe better For men and women who want to get rid of their texting neck, fix their posture in order to move, sleep and breathe better http://mybuddy.email/pyKYbXde73f-MKcLI28bkEMSyyEIH0OchHXhxBHR5n1uc1Hpag http://mybuddy.email/92J8c1Z65q0sGGpLlvrJmmHFWLJifhzeFfHr6G-tm-n33qBH2g Independent electrons moving in vacuum are termed free electrons. Electrons in metals also behave as if they were free. In reality the particles that are commonly termed electrons in metals and other solids are quasi-electronsbquasiparticles, which have the same electrical charge, spin, and magnetic moment as real electrons but might have a different mass. When free electronsbboth in vacuum and metalsbmove, they produce a net flow of charge called an electric current, which generates a magnetic field. Likewise a current can be created by a changing magnetic field. These interactions are described mathematically by Maxwell's equations. At a given temperature, each material has an electrical conductivity that determines the value of electric current when an electric potential is applied. Examples of good conductors include metals such as copper and gold, whereas glass and Teflon are poor conductors. In any dielectric material, the electrons remain bound to their respective atoms and the material behaves as an insulator. Most semiconductors have a variable level of conductivity that lies between the extremes of conduction and insulation. On the other hand, metals have an electronic band structure containing partially filled electronic bands. The presence of such bands allows electrons in metals to behave as if they were free or delocalized electrons. These electrons are not associated with specific atoms, so when an electric field is applied, they are free to move like a gas (called Fermi gas) through the material much like free electrons. Because of collisions between electrons and atoms, the drift velocity of electrons in a conductor is on the order of millimeters per second. However, the speed at which a change of current at one point in the material causes changes in currents in other parts of the material, the velocity of propagation, is typically about 75% of light speed. This occurs because electrical signals propagate as a wave, with the velocity de ------------------------------ End of alt.music.moxy-fruvous digest V14 #12208 ***********************************************