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Forum: Mathematics and Physics

From time to time everyone is faced with these problems.

  1. Sticky Thread Sticky: ALL E-BOOKS HERE WILL BE DELETED!!! USERS WILL BE WARNED !!!

    Started by klug, 6th March 2007 17:51
    • Replies: 0
    • Views: 22,506
    klug
    6th March 2007, 17:51 Go to last post

  1. [SOLVED] Why is CO2 a green house gas? [CLOSED]

    Started by ljcox, 23rd October 2019 10:46
    • Replies: 5
    • Views: 1,522
    wwfeldman
    24th November 2019, 22:24 Go to last post

  2. Multiple pulse width ( 5 pulses ) inverter and lowest low order harmonics

    Started by Easy peasy, 17th November 2019 02:11
    9 Attachment(s)
    • Replies: 17
    • Views: 1,021
    FvM
    19th November 2019, 13:13 Go to last post

  3. Moved: Fourier analysis of 5 pulse MPWM ( multiple pulse width modulation ) for inverter

    Started by Easy peasy, 18th November 2019 12:38
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  4. Energy doesn't FLOW the way you THINK! (Electrodynamics)

    Started by Swend, 9th November 2019 18:09
    • Replies: 2
    • Views: 615
    Swend
    10th November 2019, 13:33 Go to last post

  5. Metal Semiconductor Contact

    Started by Robotduck, 20th August 2019 04:19
    • Replies: 1
    • Views: 769
    timof
    21st October 2019, 09:01 Go to last post

  6. Why all the applied Voltage appears across the Depletion Region ?

    Started by Robotduck, 19th October 2019 23:02
    • Replies: 6
    • Views: 604
    timof
    21st October 2019, 03:21 Go to last post

  7. Metal Oxide Semiconductor in strong Inversion

    Started by Robotduck, 24th August 2019 13:55
    2 Attachment(s)
    • Replies: 8
    • Views: 2,169
    timof
    17th October 2019, 22:49 Go to last post

  8. Magnetic flux conduit for flux concentration?

    Started by gbugh, 29th January 2019 15:22
    2 Pages •
    1 2
    2 Attachment(s)
    • Replies: 21
    • Views: 4,980
    Precision99
    13th October 2019, 11:24 Go to last post

  9. Extracting energy from gyroscope precession

    Started by Precision99, 5th September 2019 05:30
    5 Pages •
    1 2 3 ... 5
    • Replies: 84
    • Views: 4,263
    Precision99
    2nd October 2019, 10:36 Go to last post

  10. How to get two Sweep and Repeat Generators in sync.

    Started by Tractor Beam, 1st October 2019 13:54
    1 Attachment(s)
    • Replies: 2
    • Views: 442
    BradtheRad
    2nd October 2019, 01:07 Go to last post

  11. Donors , Acceptors and Traps

    Started by Robotduck, 9th September 2019 00:58
    • Replies: 2
    • Views: 780
    dick_freebird
    9th September 2019, 19:15 Go to last post

  12. [SOLVED] Energy Band Model and Energy bond Model

    Started by Robotduck, 6th September 2019 11:16
    • Replies: 3
    • Views: 668
    c_mitra
    7th September 2019, 16:55 Go to last post

  13. dc motor theory question??? Maths

    Started by Harry.f123, 16th August 2019 20:47
    2 Attachment(s)
    • Replies: 4
    • Views: 876
    Precision99
    5th September 2019, 06:55 Go to last post

  14. [SOLVED] Is Fermi level in Metals- constant ? and how do Quasi Fermi levels in PN junctions ?

    Started by Robotduck, 23rd August 2019 16:21
    • Replies: 5
    • Views: 861
    c_mitra
    25th August 2019, 06:28 Go to last post

  15. Potential Energy and Kinetic Energy of an Electron in an Energy Band diagram

    Started by Robotduck, 17th August 2019 04:04
    • Replies: 8
    • Views: 1,373
    c_mitra
    24th August 2019, 00:02 Go to last post

  16. EMI Absorption and Reflection

    Started by Zak28, 23rd August 2019 11:22
    • Replies: 0
    • Views: 342
    Zak28
    23rd August 2019, 11:22 Go to last post

  17. Rotary capacitor physics and design

    Started by Salvador12, 14th June 2019 07:24
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 33
    • Views: 4,855
    kripacharya
    20th June 2019, 20:46 Go to last post

  18. Integration by parts

    Started by Akshaay, 11th June 2019 10:31
    1 Attachment(s)
    • Replies: 1
    • Views: 716
    wwfeldman
    11th June 2019, 14:16 Go to last post

  19. Closed: feel of diffrential equations for Novice

    Started by curious_mind, 4th May 2019 03:56
    • Replies: 2
    • Views: 2,771
    wwfeldman
    6th May 2019, 02:55 Go to last post

  20. Closed: Algebraic System Response Equation into Circuit Design

    Started by EE_Quipped, 2nd May 2019 14:50
    • Replies: 2
    • Views: 1,290
    BigBoss
    2nd May 2019, 21:16 Go to last post

  21. Closed: Faraday disc voltage calculation formula

    Started by Salvador12, 8th April 2019 17:18
    7 Attachment(s)
    • Replies: 18
    • Views: 10,461
    Salvador12
    2nd May 2019, 20:58 Go to last post

  22. Closed: solving differential equations help

    Started by joniengr, 1st April 2019 09:26
    • Replies: 2
    • Views: 1,950
    _Eduardo_
    1st April 2019, 17:26 Go to last post

  23. Closed: Does the wave equation only apply to waves with low frequency?

    Started by skatefast08, 30th September 2018 04:43
    • Replies: 2
    • Views: 1,928
    c_mitra
    17th March 2019, 01:11 Go to last post

  24. Closed: Tricky Algebra! Help

    Started by LeatherNeck, 21st February 2019 23:03
    2 Attachment(s)
    • Replies: 2
    • Views: 2,330
    LeatherNeck
    22nd February 2019, 00:40 Go to last post

  25. [SOLVED]Closed: Polar To Rectangular on the calculator, error

    Started by LeatherNeck, 21st February 2019 22:10
    • Replies: 4
    • Views: 1,104
    LeatherNeck
    21st February 2019, 22:38 Go to last post

  26. Closed: On the use of 'operator' term!!

    Started by B4M, 21st January 2019 17:22
    • Replies: 0
    • Views: 1,053
    B4M
    21st January 2019, 17:22 Go to last post

  27. Closed: computing roots on a calculator

    Started by Zak28, 20th January 2019 02:15
    • Replies: 8
    • Views: 2,105
    FvM
    21st January 2019, 09:32 Go to last post

  28. Closed: Algorithm for Timetabling

    Started by sassyboy, 19th January 2019 00:21
    • Replies: 2
    • Views: 1,395
    Aussie Susan
    20th January 2019, 23:23 Go to last post

  29. Closed: Medical Physics - Alpha Radiation Highly Ionizing: Why is it dangerous?

    Started by sassyboy, 12th January 2019 23:25
    • Replies: 4
    • Views: 1,665
    andre_teprom
    20th January 2019, 22:59 Go to last post

  30. Closed: Better understanding of capacitor charging

    Started by Kajunbee, 9th December 2018 17:48
    2 Pages •
    1 2
    • Replies: 22
    • Views: 4,914
    Ratch
    18th December 2018, 07:14 Go to last post
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