bo sung cong thuc vat li ve thau kinh (lop' 11)
Wednesday, 16. April 2008, 07:01:49
Hmm. Lam` baj` trac' nghjem ko qua' kho', nhung de? lam` dc chung' de~ dang` chung' ta can` hoc 1 phuong fap' jai? toan' sao cho vua` nhanh vua` dung'
Do tu : co' trong SGK cua? cac' ban
Tieu cu : f = 1/D = 1/ { [(n -1)*[(1/R1)+(1/r2) ] } = dd'/(d+d' ) = kd/(k -1) = d'/(1- k)
So fong' dai : k = -d'/d = A'B'/AB = f / (f-d) = (f -d' )/f
khoang cach tu vat den' thau' kinh':
d = d' f/(d' - f) = [f (k -1)] / k = -d' / k
khoang cach' tu` anh? den' thau kinh':
d' = -kd = df / (d-f) = f(k -1)
Quy tac' ve` dau' cua cac' dai luong :
Voj thau kinh Hoi tu: f >0 ; D>0 ; R>0
Voj thau kinh Fan ki: f<0 ; D<0 ; R<0
Voj' anh? that : d'>0 ; k<0
Voj' anh? ao? : d'<0 ; k>0
Sau moj~ dau' " = " la` 1 cach' tjnh' khac' nhau cua? daj luong dung' dau`. Ap' dung trong qua' trinh` lam` baj` tap trac nghjem, rat' co' hieu qua?
By z2_aini, # 16. April 2008, 10:20:34
By myThePast, # 16. April 2008, 11:42:05
co' thj` Amj' cho len day lam` ji`nua~
z2:
By chiekohosokawa_fumin, # 16. April 2008, 23:21:41
By myThePast, # 17. April 2008, 03:40:07
By z2_aini, # 17. April 2008, 06:25:10
By mhgle, # 17. April 2008, 09:54:45
By chiekohosokawa_fumin, # 18. April 2008, 06:10:18
By z2_aini, # 18. April 2008, 08:01:05
By myThePast, # 18. April 2008, 10:10:02
Bon anh chua hoc den' fan` nj` a`
By chiekohosokawa_fumin, # 18. April 2008, 12:49:12
By z2_aini, # 19. April 2008, 05:45:08
By myThePast, # 19. April 2008, 15:19:28
hoc faj theo fan foj' chuong trinh chu'
hoc cham sao dc >"<
Past khin`
By chiekohosokawa_fumin, # 20. April 2008, 05:35:27
Mặc dù học rồi
By ZDeathAngleZ, # 20. April 2008, 11:20:55
may' cong thuc nay o? sach' jao' khoa ko co' nen em moj' dua len thoj, ap' dung de? lam baj tap TN y' ma`
By chiekohosokawa_fumin, # 20. April 2008, 23:49:36
By minkhokd6, # 22. April 2008, 04:46:46
<~~~ em hoc cung~ jot' lam' co* =.=
By chiekohosokawa_fumin, # 22. April 2008, 23:37:23
By mhgle, # 23. April 2008, 09:39:52
Ai chúc tớ đi
By myThePast, # 23. April 2008, 11:42:21
<~~~ >"<
By chiekohosokawa_fumin, # 23. April 2008, 11:53:06
By myThePast, # 23. April 2008, 11:54:23
Hmm
By chiekohosokawa_fumin, # 24. April 2008, 09:34:53
By myThePast, # 24. April 2008, 11:46:29
By z2_aini, # 25. April 2008, 14:06:00
Bao. luc. wo'
By chiekohosokawa_fumin, # 25. April 2008, 14:44:57
By z2_aini, # 26. April 2008, 06:18:26
By chiekohosokawa_fumin, # 26. April 2008, 09:02:36
By z2_aini, # 26. April 2008, 10:18:13
By anhpa, # 26. April 2008, 12:09:26
anhpa cung~ hoc 11 a`
By chiekohosokawa_fumin, # 26. April 2008, 12:55:21
By z2_aini, # 26. April 2008, 13:02:20
By anhpa, # 26. April 2008, 13:03:32
By z2_aini, # 26. April 2008, 13:05:10
By hason108, # 26. April 2008, 13:33:53
By z2_aini, # 26. April 2008, 13:35:30
By baby_monkey, # 27. April 2008, 11:08:56
Nao` nao`, anh em nha` mjnh` ghj chep' de^
By chiekohosokawa_fumin, # 27. April 2008, 12:25:31
By baby_monkey, # 27. April 2008, 14:53:37
By chiekohosokawa_fumin, # 27. April 2008, 23:29:30
By myThePast, # 29. April 2008, 14:29:47
By mhgle, # 30. April 2008, 02:52:49
By myThePast, # 30. April 2008, 23:39:45
By chiekohosokawa_fumin, # 1. May 2008, 00:44:45
By z2_aini, # 1. May 2008, 09:45:42
By chiekohosokawa_fumin, # 1. May 2008, 12:38:41
By baby_monkey, # 2. May 2008, 08:50:48
quá là tội nghịp
By chiekohosokawa_fumin, # 2. May 2008, 14:27:34
Thi xong rùi khỏe quá
By myThePast, # 3. May 2008, 12:27:20
đã thi xong rồi á anh ?
By chiekohosokawa_fumin, # 3. May 2008, 13:25:52
By z2_aini, # 3. May 2008, 13:30:16