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was baseball legend ted williams. after years as a test pilot, glenn was selected in 1959 to be one of the original seven mercury astronauts. he became the first american to orbit the earth. he made three orbits and landed safely. appearance before kansas ticker tape parade followed he became an american hero. i m glad to see the pride accomplishments are not a thing of the past. karen: in 1964 he left the space program for politics. after two failed u.s. senate bids he won a seat in 1974 and became a capitol hill fixture, spearheading policy in the area of nuclear arms control in foreign affairs. but glenn had the share of political disappointments, including a failed run for the 13984 democratic nomination. in 1990 senate investigation into his ties to corrupt glenn was eventually cleared of wrongdoing. after 24 years in washington he left the senate. but not the spotlight. liftoff of discovery with a crew of six astronaut heroes and one legend. in 1998, the 77- ....
how many say, oh, that magnetic field is probably very, very steady ? how many of you know the magnetic field changing? what s a changing magnetic field induce? begin with ef. electric field. electric fields. what s a changing electric field induce? begin with mf. magnetic field. how many are starting to catch on? what does this changing magnetic field induce? begin with ef. electric fields. what does the changing electric field induce? begin with an mf. magnetic field. how many are getting the idea? okay. it turns out these waves will regenerate one another. so if you have a shaking charge, honey, you get electromagnetic waves throughout space. where the electric field makes the magnetic the electric, magnetic at the speed of light that s what light is. that s what light is. light is electromagnetic wave generated from a shaking charge. if i take this stick and i put it in the water, and i shake it back and forth, won t i disturb the water? won t water waves travel ....
when i take a picture of this check, it goes straight to the bank. oh. oh look the lion is out! no mommy no! don t worry honey, it only works on checks. deposit checks from your smartphone with chase quickdeposit. just snap a picture, hit send and done. take a step forward and chase what matters. (male announcer) live from the kron 4 news station, this is the kron 4 news. pat of new tonight at eight. residents in san francisco s mission district are on high alert. that s after a pair of brutal attacks on women. police say, the victims were not robbed or raped. just punched and beaten. the first incident happened street near san jose avenue. the second happened february 2nd. on bartlett near 22nd. injuries. new tonight at eight. kron- 4 s reggie kumar shows us the scene. where the incidents took place. developing tonight at eight. this was where the most recent attack to a place. this area are is a dark and there are a lot of people walking around. the woman was assa ....
and the lamp lit, and held it like this and it didn t light. surrounding that dome is an alteration of space. and that space is said to contain an electric field, a force field. and you can tell cause when you walk by this, you can feel your hair stand up a little bit on that. space is different with all that charge there. and it turns out the force field is stronger in here and weaker, weaker as you go further and further away. in fact, it behaves as an inverse square law, when you have all your charge localized at one place like this. it keeps petering out with the inverse square of distance, just like gravity does. and when i held the lamp like this, it lit. you know why? that s because this part here was in the stronger part of the force field than here. we say that there s more energy on the charges here than here, which introduces a concept, i wanna see if you can get into, the idea of energy per charge, and we call that voltage. let me define that. energy per ch ....
heavy or light? begin with the h. no, no, h okay. that is heavy, okay? if that anvil, all of a sudden, started like scooting across the table, you will look for some reason for that, wouldn t you? maybe you ll look for maybe a rope that you can t see or maybe a magnet or something. this is just not gonna move of itself, is it? there s gonna be a reason for it to move. hey, this is the 20th century, we know there are reasons for things, right? i take this ball, okay? this ball. put this ball. that ball starts all of a sudden going up in the air. you will look for maybe a string that you cannot see or something, right? things don t move of themselves, do they? or do they? poltergeist. yeah, or do they? okay. we re gonna talk about that. a fellow by the name of aristotle, who was a giant for the human intellect and the advancing humankind, way back fourth century b.c. classified many things and brought knowledge to a very, very high point. but aristotle made some mistakes ....