Me watching Professor Dave: In High school - "This guy is going over kid stuff, my syllabus is above this" *Clicks away* In University - "Whaat? I did not know that. Did he just summarize 3 lectures worth of material in less than 10 mins??"
I love how you explain these concepts. I have no idea what i am looking at when i see the formulas, but i understand how and why things work the way they do. You have a very good approach that should be appealing to the average person. I certainly learned quite a few things . Keep up the good work and good luck.
Lol I understand the formulas, plug and chug. And I thought it was interesting how he mentioned it was similar to Newton's law of gravity which I noticed a while ago and drew a parallel to the weakness of the force compared to the kolumn law.
Professor Dave ,I am an Indian and an IIT (Indian Institute of Technology, aspirant.There are two competitive exams one have to write to get a seat in prestigious IIT colleges.I checked all the viedeos in your channel.All the videos are related to IIT portions.I am really gonna tell all my friends who are also IIT aspirants. Thanks a lot professor Dave.All the concepts are beautifully explained.Keep going your doing great. Thanks a lot professor.Have a nice day.☺
For the checking comprehension exercise at the end, shouldn’t the force be negative because it’s between two protons and they’re both positively charged? Love the video by the way! It was helpful.
For electrostatic forces positive forces are pushing and negative forces are pulling, so the positive force has them pushing each other away. If it was negative then they would pull each other together. (Yes it's a little confusing that gravity doesn't do it that way)
Hello professor ,is me again. You are saying : the transfer of electrons from our hair to the balloon. Three question :1- why not the contrary( vice versa) ?( maybe from the balloon to our hair , why not?)is like two magnets attracting each other ,which of them is negatively charged ,which is positively charged ? Both them attract each other . 2- if there are transferred the electrons ,what happened the mass of the hair ? And mass of balloon ? Is it decreased ? Or is the mass of balloon increased ? ( or vice versa). Did you try it in vacuum chamber ?( where are not electrons , does it work in vacuum chamber ? )
Yes, but what IS charge? What does charge mean? I know the protons are positively charged, but what does that mean precisely? Is it about energy? Why are electrons negatively charged? Can particles lose charge over time? Why is something charged by nature? Why is electron floating around nucleus? What keep it not stick to nucleus? Whats preventing it to fly away?
Question: Is the General Chem and Organic Chem all the videos you have for chemistry? Thank you..keep up the amazing work. Love your short and to the point videos!
i also have an organic chemistry practice problems series, a little extra review! and i have a few more general chemistry saved up that i'll slowly release. but otherwise focusing on other subjects!
Sir, your classes are awesome and it helps me a as I'm preparing for my class 12 th final board examination. Thank you a lot and all my friends are watching your video and I'm from Kerala (INDIA).
Sir it was a vey great video But i wanted to ask one question That why always electric field lines are directed outwards for positive charge and inwards for a negative charge?
I have a question. Can you determine the force between two charges with their relative charges, I mean like +1,-2 and so on? Or do we always have to use 1.6×10^-19?
Congratulations! You are a great teacher. I have a question, if I may ask (apologize my English): If protons (+) are stuck inside the core of the atom, and electrons (-) lay outside on circles, how can external (on circles) charges be positive ? How can electrons leave this circles to go on another one's atom if all external forces are negative (-), then rejecting forces? Thanks a lot
ofc i'm not professor dave but i think you got a bit of it wrong here. yes indeed protons are in the centre of the atom but the charges on the surface can be positive not because protons are present on the surface, but because some of the electrons on the surface are lost. when electrons are lost, the material obviously becomes positively charged.
hello john: this is a good question. in video professor dave states: "all materials start in neutral state" (this is true ....mostly) some materials are more "radioactive" than others. what I think is happening is "materials" (lets stick with balloon-hair friction experiment) have different electrical "tendencies". hair of course is different structure to balloon. both materials are moving during "friction-event" professor dave states: "electric charge is displaced by rubbing these materials" (balloon hair) "displaced" means one thing now occupies location of previous thing. (this is not helpful).... what are these things? where are these locations? which thing is "displaced" by next thing? friction is actually a kinetic event. (because all material objects possess transferable energy). in some cases, this energy can be transferred easily. in others, energy cannot be released easily. professor dave is defining this energy release (here) as electron flow. (i think the electrons are gaining a negative charge during friction event). this is a guess. we cannot see electrons gaining a charge.... (if anyone gets this far, and says... sure we can see electrons gaining a charge, please let me know- i would be very interested in this data). (some electrical engineers question whether an electron actually exists). this is confusing. tesla called electron an electrostatic "shell". so...shells of force are being created during friction event (maybe). tesla tended to be very advanced in his understandings of electrical principles. we detect this shell-force as "electricity" - a flow of negatively charged electrons wants to go somewhere... where? maybe back to a neutral state... unless material remains radioactive (so some materials retain charge, some dissipate charge). peace: thanks for reading.
The way I have it is that at the centre of an atom is a hole which reaches into a different universal dimension...an imploding force we call the higgs-field. It is so powerful that it pulls plasma into it so as the imploding force is sealed...more or less...and it is this imploding force that, when disturbed, pulls other atoms into its catchment area. There is a limit to how much plasma can be held by the Higgs field and any excess is kicked out at the speed of light....and so, an oscillating Higgs-field carrie's attraction and repelling forces organised by the polarity of the many co-joined atoms.
Hi Professor Dave, Your explanation very outstanding. I want to ask one question that is; IS POSSIBLE TO GENERATE ELECTRICITY IN THE WATER THROUGH THE ELECTRIC FIELDS GENERATED BY THE FISHES ?
According to my information through some reliable resources there are fishes which generate electric field in order to find their prey, path etc. These fishes are called ELECTROGENSIS
oh yeah? interesting. the ocean has a fair amount of ions in solution, so i guess it's possible for a field to be sustained to some degree. crazy stuff!
Can you help me in referring some resources concerning the development of an ELEMENT responsible for converting the ocean's ions energy into electricity ( even in mircovolts). I will be grateful if you sort out something.
well if you mean a literal chemical element, that's not going to work, but beyond that ions themselves don't generate electricity, they just conduct electricity in solution. it is simply that electricity can propagate through electrolytic solution. so there is nothing to convert that i'm aware of. but snoop around, you never know!
first of all real thanx sir for replying... so the clearcut statement wud be that ""shielding effect remains same from left to right across the period""... hope I got it right..
Are things either a negative or positive always by nature? like the hair and balloon example, will hair always act as positive (electron donor) no matter what
Great video. But I have a question. I get that you call something negatively charged when it has excess electrons because electrons are negatively charged. But what exactly makes electrons negatively charged or the protons positively charged?
The short answer is convention and history. It is a completely arbitrary that electrons are considered negative and their counterparts the protons are considered positive. Benjamin Franklin who studied the triboelectric effect, took a guess that some substance was flowing from the silk to the glass, in order to make the glass get positively charged. He proposed that the silk was losing some of this substance, and the glass was gaining this substance, when he rubbed the glass rod with the silk. He believed that the glass rod would now have a surplus of this substance (which he called a positive charge), and the silk would be left with a deficit (which he called negative charge). Unbeknownst to him, reality was the other way around. The electron is the most mobile charge carrier in most matter familiar to you, and the glass rod was really losing electrons to the silk. It wasn't until J. J. Thompson discovered the electron, that we could know this fact. With his experiments with cathode ray tubes, he discovered behavior from the negative terminal of a circuit, that didn't happen with the positive terminal. This is why it is the cathode ray tube, instead of the anode ray tube. The rays are rays of electrons that attract positive charge, hence the term cathode ray.
Hey Professor Dave, I can't help but notice, what is that tattoo of because it looks pretty dope! Keep up the good work your getting me through grade 12 physics in the land down under, Australia!
Really helpful and easily understood ! 👌 Sir can you please make a video on WHY of this topic ? I mean why is electric field created by a charge at rest ? Charge is a fundamental property of matter...But why is the Field coming into play ? Why why... Please if someone can reply it's highly appreciated....
Why is the 1.6×10^-19 in the numberator? How was both q1 and q2 identified? I know the basic electric charge is 1.6... but i still don't quite understand
Me in highschool after watching this video trying to understand electric field: Thanks a lot for making my life harder Dave😭 In University: Where have you been all my life man😅 Thanks so much Dave😊
when a neutral body is placed inside a electric field it faces one force in a direction due to positive charge and at the same time it experiences another force due to negative charge in opposite direction but of equal magnitude because it is a neutral body and consist of same number of electrons and protons.
Gravity is different but electricity and magnetism is the same thing. he brought up gravity because the two equations are very similar but its not the same force
Sir can you please explain why an insulator can freely give away its electron just by physical rubbing. Is it not related to ionisation energy? If so, should it not be difficult to displace electron from the stable covalently bonded species.
0:50 okay.. I got a doubt (it might be a silly one tho,,) So if the hair becomes positively charged then shouldnt it repel itself with the hair of the other side where the second balloon was rubbed??
The number of electric field lines passing normally through a given area is called electric flux. Mathematically, it is defined as the product of electric field intensity with the normal area. Φ=E.A (E and A are vector quantities) Φ= EA cosθ
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Me watching Professor Dave:
In High school - "This guy is going over kid stuff, my syllabus is above this" *Clicks away*
In University - "Whaat? I did not know that. Did he just summarize 3 lectures worth of material in less than 10 mins??"
Really?
Do you want advance concepts
this actually me
XD
My professor took two hours and I don't understand a thing I watched 10 minutes of professor Dave and it's all clear now
facts
thank you physics jesus
lmao
😂❤ ahh hahaha 🤣 hehehehe tickled me
@@etherealbladerx8153 you what
@@etherealbladerx8153 thats kinky 😦
@@chr0nically_onl1ne it was funny 😆 lol
Professor Dave explained this 2-week topic in less than 10minutes. Bravo!!
It was for children,....
Yet I'm still here😭@@LogosInsula
Get lost he still taught everything that was needed@LogosInsula
I was having such a hard time grasping the concept of electric charges and electric fields, but you cleared it up so nicely, thank you so much Dave!!
I love how you explain these concepts. I have no idea what i am looking at when i see the formulas, but i understand how and why things work the way they do. You have a very good approach that should be appealing to the average person. I certainly learned quite a few things . Keep up the good work and good luck.
He left a cliff hanger. He didn't explain electric potential :(
Lol I understand the formulas, plug and chug. And I thought it was interesting how he mentioned it was similar to Newton's law of gravity which I noticed a while ago and drew a parallel to the weakness of the force compared to the kolumn law.
@@spacejunky4380 ok
❤❤😊
Each school should have such a physics teacher like you!!
A big topic in a nutshell
In a nutsack
Kurzgesagt
The only teacher that stands still whilst teaching, thank you so much
Professor Dave ,I am an Indian and an IIT (Indian Institute of Technology, aspirant.There are two competitive exams one have to write to get a seat in prestigious IIT colleges.I checked all the viedeos in your channel.All the videos are related to IIT portions.I am really gonna tell all my friends who are also IIT aspirants. Thanks a lot professor Dave.All the concepts are beautifully explained.Keep going your doing great.
Thanks a lot professor.Have a nice day.☺
awesome, glad to be of help! please tell all your friends to subscribe :)
Sure ,professor.I will tell all my friends to watch your video and subscribe.Thanks a lot.Have a nice day.🙂
Hari kalatheeswaran iin
Omg bless you!! You have made me understand more in this video than 4 weeks of my physics 102 professors
Same here! 😄
I found it excellent for my grade 10 student daughters. Be blessed Professor.
Amazing reading skill 👏🏻❤
@1:39 I thought your video ended.
For the checking comprehension exercise at the end, shouldn’t the force be negative because it’s between two protons and they’re both positively charged? Love the video by the way! It was helpful.
the q terms include the sign, protons are positive so it's net positive!
For electrostatic forces positive forces are pushing and negative forces are pulling, so the positive force has them pushing each other away. If it was negative then they would pull each other together. (Yes it's a little confusing that gravity doesn't do it that way)
Your videos are really good sir. Really helped me understand the concept. Most other videos are just repeating definitions shown in textbooks.
You explained 2 hours of professor lecture in 6 minutes. I didn't understand anything now I understand what is topic about
MY FAVORITE PROFESSOR! This guy literally just explained a three-day lecture in a 6:40 video. TT
hey what did you major in?
Why do rubbed ballon become negatively charged while hair positively charged, how that been determined?
Ooo it because the balloon gained electron while hair lost electron, hehe got it
Your videos are LITERALLY the best.
Your videos go straight to the point and always carry me through exams. Appreciate everything!
Really needed this , perfect timing . Thanks professor
ruclips.net/video/lqUDBJJV19Y/видео.html
I love the comprehension part! t hank you for taking the time to make these beautiful videos
ruclips.net/video/lqUDBJJV19Y/видео.html
Hello professor ,is me again. You are saying : the transfer of electrons from our hair to the balloon. Three question :1- why not the contrary( vice versa) ?( maybe from the balloon to our hair , why not?)is like two magnets attracting each other ,which of them is negatively charged ,which is positively charged ? Both them attract each other . 2- if there are transferred the electrons ,what happened the mass of the hair ? And mass of balloon ? Is it decreased ? Or is the mass of balloon increased ? ( or vice versa). Did you try it in vacuum chamber ?( where are not
electrons , does it work in vacuum chamber ? )
that "checking comprehension" music was priceless
This is probably the best video I've seen on the subject. Job well done.
Exam on monday this week thank god for professor dave
Excellent. Thank you so much. I will use it in my lectures.
That was well explained Dave & I understood it immediately ..the bit after "professor Dave again" was the hard part.
Yes, but what IS charge? What does charge mean? I know the protons are positively charged, but what does that mean precisely? Is it about energy? Why are electrons negatively charged? Can particles lose charge over time? Why is something charged by nature? Why is electron floating around nucleus? What keep it not stick to nucleus? Whats preventing it to fly away?
You've just helped me with the Presentation task I had to do this week
you're the best. you explain in not how you understand but for how the viewers will understand
I was having a really bad day.. till the opening kicked in!
Question: Is the General Chem and Organic Chem all the videos you have for chemistry? Thank you..keep up the amazing work. Love your short and to the point videos!
i also have an organic chemistry practice problems series, a little extra review! and i have a few more general chemistry saved up that i'll slowly release. but otherwise focusing on other subjects!
Thank you! Stay awesome
Keep making quality content prof
Most productive 6 minutes before an exam I have ever spent thanks to Professor Dave!
Man explains bad teachers' hours of letcure in literally 5 mins!
Awesome 👍
I am simply happy I found this channel
Sir, your classes are awesome and it helps me a as I'm preparing for my class 12 th final board examination. Thank you a lot and all my friends are watching your video and I'm from Kerala (INDIA).
So how did your exam go? Are you still studying?
@@Maxbronx4122 I'm a medical student now
@@abhijithmenon2513 woah that's great
@@abhijithmenon2513 congrats man, good luck
Sir it was a vey great video
But i wanted to ask one question
That why always electric field lines are directed outwards for positive charge and inwards for a negative charge?
Sania Zehra it's only a convention
electric field lines are imaginary hypothetical lines which tells the magnitude and direction of electric field intensity at any point.
Force is a vector and it has direction. The direction of force in the field is indicated.
this is literally all of what i learned in a physics class in a month bruh.
Crazy that I learned more from a 7 min video than I have from past 4 50 min lectures at school.
hello Prof
Did you make any video about the relation between the time-varying electric field and the time-varying magnetic field?
plzzzzzzzzzz Reply!
I cannot believe this man just taught a whole week worth of my syllabus in barely 10 minutes
great tutorial...
I have a question. Can you determine the force between two charges with their relative charges, I mean like +1,-2 and so on? Or do we always have to use 1.6×10^-19?
Thank you so much I love what you are doing with the channel!
Congratulations! You are a great teacher.
I have a question, if I may ask (apologize my English):
If protons (+) are stuck inside the core of the atom, and electrons (-) lay outside on circles, how can external (on circles) charges be positive ? How can electrons leave this circles to go on another one's atom if all external forces are negative (-), then rejecting forces?
Thanks a lot
ofc i'm not professor dave but i think you got a bit of it wrong here. yes indeed protons are in the centre of the atom but the charges on the surface can be positive not because protons are present on the surface, but because some of the electrons on the surface are lost. when electrons are lost, the material obviously becomes positively charged.
Education systems needs to adapt this type of format
I studied everything in my clg
This like a revision tq
gotta love dave
Professor Dave, what determines which of the 2 objects will be positively or negatively charged when rubbed together? eg balloon vs jumper
hello john: this is a good question.
in video professor dave states: "all materials start in neutral state" (this is true ....mostly) some materials are more "radioactive" than others.
what I think is happening is "materials" (lets stick with balloon-hair friction experiment) have different electrical "tendencies".
hair of course is different structure to balloon.
both materials are moving during "friction-event"
professor dave states: "electric charge is displaced by rubbing these materials" (balloon hair)
"displaced" means one thing now occupies location of previous thing. (this is not helpful)....
what are these things?
where are these locations?
which thing is "displaced" by next thing?
friction is actually a kinetic event. (because all material objects possess transferable energy). in some cases, this energy can be transferred easily. in others, energy cannot be released easily.
professor dave is defining this energy release (here) as electron flow. (i think the electrons are gaining a negative charge during friction event). this is a guess. we cannot see electrons gaining a charge.... (if anyone gets this far, and says... sure we can see electrons gaining a charge, please let me know- i would be very interested in this data).
(some electrical engineers question whether an electron actually exists). this is confusing. tesla called electron an electrostatic "shell". so...shells of force are being created during friction event (maybe). tesla tended to be very advanced in his understandings of electrical principles.
we detect this shell-force as "electricity" - a flow of negatively charged electrons wants to go somewhere... where? maybe back to a neutral state... unless material remains radioactive (so some materials retain charge, some dissipate charge).
peace: thanks for reading.
@@writerNB wow u seem like a njce guy
Very clear and helpful. Thank you.
Wait, is the electric field independent of particles? Or only around at point charges/particles?
What's the difference between a point charge and a magnetic monopole?
luv your explanation
you always teach the most basics of a topic which makes it so easy to understand thank u
😅😅
Can you do a video on reclaiming your own energy fields when someone keeps switching your polarity against your will.
Thank you professor
The way I have it is that at the centre of an atom is a hole which reaches into a different universal dimension...an imploding force we call the higgs-field. It is so powerful that it pulls plasma into it so as the imploding force is sealed...more or less...and it is this imploding force that, when disturbed, pulls other atoms into its catchment area. There is a limit to how much plasma can be held by the Higgs field and any excess is kicked out at the speed of light....and so, an oscillating Higgs-field carrie's attraction and repelling forces organised by the polarity of the many co-joined atoms.
What will be the line of two negative charges?
Best comprehension ever I seen.
#DefinationsForStudents
Wow stuff I had never learned before.
Hi Professor Dave,
Your explanation very outstanding.
I want to ask one question that is;
IS POSSIBLE TO GENERATE ELECTRICITY IN THE WATER THROUGH THE ELECTRIC FIELDS GENERATED BY THE FISHES ?
living organisms don't generate electric fields of any significance!
According to my information through some reliable resources there are fishes which generate electric field in order to find their prey, path etc. These fishes are called ELECTROGENSIS
oh yeah? interesting. the ocean has a fair amount of ions in solution, so i guess it's possible for a field to be sustained to some degree. crazy stuff!
Can you help me in referring some resources concerning the development of an ELEMENT responsible for converting the ocean's ions energy into electricity ( even in mircovolts). I will be grateful if you sort out something.
well if you mean a literal chemical element, that's not going to work, but beyond that ions themselves don't generate electricity, they just conduct electricity in solution. it is simply that electricity can propagate through electrolytic solution. so there is nothing to convert that i'm aware of. but snoop around, you never know!
first of all real thanx sir for replying... so the clearcut statement wud be that ""shielding effect remains same from left to right across the period""... hope I got it right..
Ranbir kapoor is that you?
Funny that you are a Kapoor as well
He is more handsome than Ranbir
bruh you just posted helpfull stuff you are gonna gain subscriber
Now all of this concept are cristal clear to me , thank professor Dave ...
what is the magnitude between two protones
Your teaching is very useful to me sir
Are things either a negative or positive always by nature? like the hair and balloon example, will hair always act as positive (electron donor) no matter what
hi prof . dave ,what is the similarity between electrostatic discharge and electric current.Are they the same phenomenon?
Best explanation
Great video. But I have a question. I get that you call something negatively charged when it has excess electrons because electrons are negatively charged. But what exactly makes electrons negatively charged or the protons positively charged?
The short answer is convention and history. It is a completely arbitrary that electrons are considered negative and their counterparts the protons are considered positive.
Benjamin Franklin who studied the triboelectric effect, took a guess that some substance was flowing from the silk to the glass, in order to make the glass get positively charged. He proposed that the silk was losing some of this substance, and the glass was gaining this substance, when he rubbed the glass rod with the silk. He believed that the glass rod would now have a surplus of this substance (which he called a positive charge), and the silk would be left with a deficit (which he called negative charge). Unbeknownst to him, reality was the other way around. The electron is the most mobile charge carrier in most matter familiar to you, and the glass rod was really losing electrons to the silk.
It wasn't until J. J. Thompson discovered the electron, that we could know this fact. With his experiments with cathode ray tubes, he discovered behavior from the negative terminal of a circuit, that didn't happen with the positive terminal. This is why it is the cathode ray tube, instead of the anode ray tube. The rays are rays of electrons that attract positive charge, hence the term cathode ray.
thanks man...that was helpful!
Hey Professor Dave, I can't help but notice, what is that tattoo of because it looks pretty dope!
Keep up the good work your getting me through grade 12 physics in the land down under, Australia!
i get this question so much that i made a video about it! check out "ask professor dave #3".
Really helpful and easily understood ! 👌 Sir can you please make a video on WHY of this topic ?
I mean why is electric field created by a charge at rest ? Charge is a fundamental property of matter...But why is the Field coming into play ? Why why... Please if someone can reply it's highly appreciated....
Wonderful tutorial
Thanks Professor Dave!
Why is the 1.6×10^-19 in the numberator? How was both q1 and q2 identified?
I know the basic electric charge is 1.6... but i still don't quite understand
Very well explained sir ..lot of love from India😊💌
🤩🤩🤩
Me in highschool after watching this video trying to understand electric field: Thanks a lot for making my life harder Dave😭
In University: Where have you been all my life man😅
Thanks so much Dave😊
Sir what happens when a neutral body is placed in electromagnetic fields?does it experience any force?
when a neutral body is placed inside a electric field it faces one force in a direction due to positive charge and at the same time it experiences another force due to negative charge in opposite direction but of equal magnitude because it is a neutral body and consist of same number of electrons and protons.
But why are the arrows going outward in positive charges and inward in negative ones?
I'm confused... I was taught that gravity, magnetism and electrical were 3 very different fields.
Gravity is different but electricity and magnetism is the same thing. he brought up gravity because the two equations are very similar but its not the same force
Sir can you please explain why an insulator can freely give away its electron just by physical rubbing. Is it not related to ionisation energy? If so, should it not be difficult to displace electron from the stable covalently bonded species.
0:50 okay.. I got a doubt
(it might be a silly one tho,,)
So if the hair becomes positively charged then shouldnt it repel itself with the hair of the other side where the second balloon was rubbed??
Balloony science! Nice one!
very nice, this is what i need.
Thanks dude
this is helping me a lot!!!!!!
Very helpful video
🔥🔥🔥 These fires came while listening 🎧....
Thnx Professor Dave,once again u saved my life 💙🙏
thank you so much
Nice lecture
Can you make Electric Flux, Gauss's Law and Electric potential
i also wants
The number of electric field lines passing normally through a given area is called electric flux.
Mathematically, it is defined as the product of electric field intensity with the normal area.
Φ=E.A (E and A are vector quantities)
Φ= EA cosθ
I don't understand why momentum is measured in watts but angular momentum "spin" is measured in joule seconds
Thanks!
Amazing video dude ❤❤🎉🎉
A story made to believe in a world made out of dust.