The ideas in these videos are drawn from a long history in science education, mostly through work with science teachers at schools in very disadvantaged situations. I qualified as a Physical Science and Mathematics teacher in 1966 and taught in high schools in South Africa and the UK for five and half years before moving to the tertiary sector. I was involved with friends in setting up the Science Education Project (SEP) in 1980, an NGO that worked with teachers in South African "township" and rural schools to promote a more hands on and science processes approach to teaching. I have also been involved in science teacher education as a senior lecturerer at a number of universities in South Africa. With support from the Solon Foundation, I have worked intensively since 1998 in support of science teachers in deep rural areas in South Africa, Zimbabwe and Lesotho.
I would welcome and any comments, ideas and suggestions - via brian@scienceteachingalive.com
I’m not sure how the magnet works between the North Pole & South Pole what’s I understand if the magnet pulled in together is the south pole if it pushed out is the North Pole maybe I got it wrong
Old analog meters for measuring currents or volts work by an electromagnet pushing at a permanent magnet, but I suspect the magnet may be rather small. Magnetrons, some of the old antennas, the colorful part around the brass ring, may contain beryllium. If that part breaks and the dust is inhaled it may cause beryliosis, a rather nasty lung condition that makes for a painful way to die
Can you explain sir why that shiny part on metal housing from speaker magnet is so strong? It looks like gall coated metal but what is that in the center is it aluminum coated? Its nearly strong the center as bouth poles together. And the strange thing is bouth poles from other magnet are atracted to it
Hi Baddy thank you for your information I can't fund ur email address also I aerdy subscribed you I have a question for you it's possible to make electricity by magnetic could you help about that thanks again and also replying me by email please 😊
You must be careful when opening a Microwave oven control cabinet. The large capacitor in this area retains its charge ,3000V for some time , This can kill you by electrocution .
Rspected sir, why you stopped making videos? I am a physics teacher and always loves to teach physics with activities. so can you suggect me some sources where i ca learn these things. Love from India
This experiment is wonderful for the teachers (like me) who are looking for activities the kids can make at home for the COVID situation! Thank you so much.
I've just come across this. Some good ideas. I get students to work in groups and give then 2 Bunsen's , 2 clamped tubes of water and 2 thermometer. I get them to heat the water for a certain amount of time then get them to compare their observations between each tube. (Difference in temp rise, flame colour, soot production in one) . I then introduce the concept of complete and incomplete alongside the 2 equations linked into their observations.
You might want to consider leaving the magnets in the metal, for speakers, or stuck on the metal when dealing with hard drives. With the speaker magnets, the metal acts as a shield in one direction, which can be useful for some applications and experiments, and the metal plates the hard drive magnets are stuck to can be used for mounting the magnets on non-magnetic material.
thank you brian :) deriving experimental values for standard reduction potential is more fun than a textbook exercise. a question though. is there a chemical explanation why some ions have a greater pull on electrons that causes the differences in the numbers? (i am not a science person, but found your video interesting enough to find out a lil' more via google)
This was very helpful thank you. I am not a teacher but a student myself found this extremely helpful. It would be great if you could talk about why the galvanometer goes specifically backwards or forwards when u move the magnet in or out of the coil, although i understand that this video was aimed at teachers who probably already have an understanding of why that occurs. Again thankyou.
Its to do with the current direction reversing due to a change in magnetic field direction changing when u pull the magnet out. Look up Flemings left hand rule. That should help.
