got a physics 2 exam tmmrw and I expect much of the same haha

me on my exam next week

i remember school too , but they taught me how to sit straight , nothing about physics i guess mine was a special school .

no matter what, always is there somebody who complains =\

facts

yass

They do be spitting Fax doe

Yeah, this was recommended by my teacher

nah my teacher recommended a video that looks like it was made in the 1990's. Im here because this ones better than that video

Emily Tang lol that's cause they are following the curriculum. It says in the series description. They're falling back for my class though. The electrostatics were going good, but now the videos are coming out too slow to help me through my class...

Yes please!

Dorotheu Ximenes de Farias specifically calculus AB

shut up and take my money

BoB ok :D

Omg yes Please please pleaaase!!!!!

malignor 5:04 hahahahaha. Doesnt make sense to me either. Not that ive tried really to wrap my head around it

malignor think of it this way: a particle is something that has a value at a single point in space, where a field has a value at every point in space. In this case, we're dealing with a vector field, so every point in space will have a vector associated with it that represents the strength of the magnetic field at that point.

I know you're joking but I find it fascinating people actually questioned the nature of magnetic fields but the same people never questioned "what is an electron?".

In field theory, magnetism is a distortion in the ever-present element of the universe known as the magnetic field. In the same way that gravity is a distortion of what is known as space. Does that help?

Its a gas of photons constantly being emitted and reabsorbed by the electron. You can show this by calculating the group behavior of a gas of photons is the electric/magnetic field. Its why when you move relative to an electron (electric current) you get a magnetic instead of electric field. Magnetic and electric fields are not actually two separate objects, they are actually just two parts of the same gas of photons. Which part you see more of depends on the frame that you are moving relative to the electron. So electric/magnetic field = light bouncing around

The FBI lied to us again

@THe pUmPkIn ,RuLeR oF iLlUmiNatI ConFirMed your part of area 51 mission,cover blown

thanks alot that actually helped alot

Jim James Was searching the comments for someone who'd post that lol

When particles are in relative motion, they induce a magnetic field. Remember that, even though electrons move at drift speed, current travels near the speed of light which means Special Relativity takes place. The magnetic field causes, according to Maxwell's fourth equation, a changing electric field that will induce a magnetic field around a close loop. All particles have an intrinsic property known as spin that defines its magnetic properties, all of which are caused due to relative motion. It may have spin angular momentum (on its own) or orbital angular momentum (such as electrons orbiting nucleons). We mostly look at electrons because their magnetic dipole moments are thousands of times greater than protons or neutrons. Before I move on, in quantum physics, we can only measure one component which are quantized. For the z direction, the spin / orbital angular momentum is proportional to its spin. For an electron, through experimentations, half of the time an electron will have a downward dipole moment, and the other half of the time an electron will have an upward dipole moment. Thus, we conclude that the spin of an electron is plus or minus 1/2. When the electron is spin-up, its spin is +1/2. When the electron is spin-down, its spin is -1/2. The magnetic dipole moments are vectors and thus have an associated direction. Due to random disperse of electrons in all different directions, they tend to cancel out making most materials not magnetic. Let's look at Chemistry for a second at electron orbitals. Remember that electrons like to pair? Spin-up electrons like to pair with spin-down electrons; that's how bonding happens. Materials are magnetic only if the combination of all the magnetic dipoles line up to produce a magnetic field, and, as you can tell, this would never spontaneously happen. However, due to chemical properties, it is possible for some materials to be permanently magnetic while others could only be temporarily magnetic. There are three types of magnetic materials. Let's start with Diamagnetism. This occurs when most of the electrons are paired up in a material. This is the weakest type of magnetism, and all of us (you, me, wooden chairs, etc) are diamagnetic because our electrons are, for the most part, paired up. Have you ever seen a frog levitate due to magnetism? That frog is experiencing diamagnetism. Basically, an external magnetic field is applying a magnetic force on the object away from the source of the magnetic force. That magnetic field induces the electrons in the material to line up, causing it to be magnetic. However, the magnetic field induced in the diamagnetic material opposes the external magnetic field. This pushes the diamagnetic material (e.g. the frog) away to a less magnetic field (like the air). However, diamagnetic materials are only temporarily magnetic. Once you remove the magnetic field, diamagnetic materials lose all magnetic properties. Next is paramagnetism. Remember what I was saying about unpaired electrons? This is why some elements like the Noble Gases or sodium ions are least magnetic because they have a stable set of paired electrons. Surprisingly, this shows that carbon is more magnetic than fluorine (interesting organic properties). However, if we look at the elements where there are the most unpaired electrons such as the rare earth, actinide, or transition metals, we can see that they are in between full sets of electron orbitals and thus have TONS of unpaired electrons. (Look at iron! It's in the middle of the transition metals, and even though it has 4 levels, it has 4 unpaired electrons hidden in the 3rd level which resists bonding!) Again, an external magnetic field can orient these unpaired electrons to make such materials magnetic and induce their own magnetic field. However, unlike diamagnetic materials whose magnetic fields fight against the external magnetic field, paramagnetic induced magnetic fields actually add up with the external magnetic field to attract to a higher magnetic field. However, like diamagnetic materials, once you remove the external magnetic field, the paramagnetic materials lose their magnetic properties. This explains why you can't make permanent magnets out of most elements like carbon or oxygen. The last class is ferromagnetism. Ferromagnetic materials are a special type of paramagnetic materials in that, once an external magnetic field is applied, the dipole moments permanently line up forming a permanent magnet. Ferromagnetic materials are typically materials like iron, cobalt, nickel, germanium, and several other materials. This is because their materials are typically arranged in domains. Each domain has their dipole moments arranged in a single direction; however, each domain faces a different direction causing their to be no net magnetic field normally. Once the external magnetic field is introduced, these domains in iron or cobalt line up resulting in permanent magnets. One final note is that increasing the temperature will cause a material to lose its magnetic properties due to quantum effects, but I'm sure you can imagine that increasing the temperature would cause dipole moments to move in all sorts of directions which would ultimately lead to lose such magnetic properties. What I have just explained is why magnets exist in the way they do. If you want to understand how magnets attract, I'm sure you can easily deduct that from this video. A magnet produces magnetic field lines, similar to electric field lines. Once a magnet detects another set of magnetic field lines, they either repel or attract like charges. Magnetic field lines come out of the North end and come into the South end. (This explains why magnetic monopoles can't exist. The field lines are always coming in from somewhere and coming out the other end. When you cut a magnet, field lines regardless come in from one end and exit the other end.) So when you place a North next to a South, the field lines of the North want to come into the South, so they push toward each other. Similarly, a North and a North are both pushing their field lines away from each other. Is there anything else you would like me to explain or clarify? I apologize if I lost you somewhere.

Obito Sigma and How long did that take you to copy and paste from the internet? LOL :D

Xavier Underdog LOL! I'm the smartest Juggalo in the world :D

That doesn't explain why they exist for you to fully explain it you must understand Einsteins Special theory of relativity.

Evan Hebner what's ap physics?

Evan Hebner I'm just wondering

James Henderson Advanced Placement. It's a US version of hard college-like classes in high school. Sort of like IB classes.

good luck mate

Evan Hebner Same man.

so in other words magnets how do they work?

basically what the whole series is

Patrick Melody I dont necessarily understand the variables specifically, but I understood this concept back in the 4th grade when we did electronic wiring experiments.

i'm not an expert and infact am still in highschool(think thats what americans call it) and i understood this perfectly

This is a physics course. Physics is generally a high school level course in the US, some countries might be different. You don't have to be an expert to understand this, you just have to know some physics (I.E. watched the other episodes)-- and have a high school level education.

hidden knowledge: our bodies are magnetically designed with positive and negative sides- front and back, side to side. this channel isn't really sharing much real wisdom just a bunch of theories and distraction. I'm actually going to unsubscribe because most of what was said was untrue to me- also insurance is a fraud

liked it cuz it was funny

louis makoni... Noitdoesn'thelptoaddanotherlayerwhenlearningnewstuff. It is easier to work with spaces. It is the responsibility of the coder. Like computers. It is better to use a mouse than have to learn OS language.

You can pause it. I do pause all the time

They cut out that time to make a shorter video and so people who understood it the first time don't lose interest. You can always pause it. Rapid educational videos are popular because people don't need to understand every sentence to get the jist.

just take some adderall

People don't want to watch 20 minute videos unfortunately. I pause and go back when I didn't understand something

Rosie Rose Are you kidding me that's just 6th grade portion

Very true. Speak more slowly we like to learn from you but can't keep up!

Did you pass

Waddle literally just had my test a day ago and struggled so much cause our teacher is not very good at explaining the concepts

That is a good point. Actually, the observations, history, measurements, calculations, hypotheses and applications need to be presented separately and clearly. Academic physics mixes all of them, emphasizes on the hypotheses and ignores the applications. This makes physics look like a belief system.