Recent content by physicist 12345

hi dears first i hope that this is the right position to my topic I am a student and i want to know what is the future of nuclear physics researches and what if this field is still promising or not

mmm thank you very much ... but i as told you i just beginner at this topic :)

deep thanks .. it seems that i start to solve some of confusion but i saw at many sources that the chen's 1st condition must be satisfied .. i still confused here .. could we say that to say that this is plasma then we want it to be quasi-neutral and that only achieved if our plasma is larger...

hello every body in fact currently i began to study plasma physics and i confused about some points 1) why should my plasma must be greater than debye length to have a collective behavior ? and is it the quasi neutrality is the main condition for plasma state ?? 2) i want a discussion about...

then now i understood that ordinary op amp could amplify dc .. put as it go out flat (a t the same reference) how it then be said that they amplified please also if you have a comment on question 4 i will be happy

its also dc .. i was asking how the level rise (amplified sinusoidal take not change their reference ) now watching the video :)

iam sorry

I understands the idea iam a beginner in electronics could you tell me how would the shape of output will be ? also there is no difference between this circuit and that which raise the level at ac ?

thank you very much but could you tell me how op amp could amplify dc ?

thank you question 4 gust generally no specific cases

at firs i apologize if this is not the place for this but really i have exam after few hours and i need chech my solutions . i have some essay questions and i want to check my ideas 1) can we use the diode as switch instead of transistor ?? 2)design an op amp to amplify the dc signal 3)how to...

it seems helpful .. but at multivibrator say- astable- how the capacitor and resistor make positive feed back

here the second photo for the rest of the section (the 1st one at previous reply)

here is the photo of the beginning of the section

i read chapter 18 (switching circuits ) at (principles of electronics by v.k mehta) .. section 18:10 he mention that the multivibrator is a two stage amplifier that work with a positive feed back .. i can take a screenshot if you need .. the use of positive feed back at oscillators i already...