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PHYSICS 17 · Dis 1B

Modern Physics

Fall 2026Czajka, A.M.4 units

Seats, time, final and grades

Seats

Open, 4 seats left.

108 of 112 enrolled.

Read 11 hours ago. The latest refresh is overdue. Seats and instructors may have changed since. Check the registrar before enrolling.

Meets

W 2:00pm-2:50pm

This discussion only. You also attend Lec 1.

Final

Thu 10 Dec, 3:00pm to 6:00pm

One exam for the whole class, Los Angeles time.

Read 3 days ago.

Grades

3.24

Predicted GPA

Historical records across all instructors; 499 letter grades

dibs has seen this section open 3 times since 18 August. The last time was 28 September. 1 of those was a reading where the capacity figure moved and the enrolled count did not, so dibs could not tell whether a seat existed and did not send an alert.

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Restrictions checked 3 days ago and may be outdated. Unwatched sections are rechecked less often than watched sections. Check the registrar before counting on a seat.

When it meets

This discussion and its linked lecture.

Mon
Tue
Wed
Thu
Fri
12pm
1pm
2pm

Lec 1

12pm-12:50pm

Lec 1

12pm-12:50pm

Dis 1B

2pm-2:50pm

Lec 1

12pm-12:50pm

Scroll sideways for the whole week. All meeting times are listed below.

  • Dis 1B

    W 2:00pm-2:50pm

  • Lec 1 (required lecture)

    MWF 12:00pm-12:50pm

Kinsey Science Teaching Pavilion 1240B

Grades

3.24

Predicted GPA

Historical records across all instructors; 499 letter grades

Of the 4 people in the grade record for PHYSICS 17, the 2 with the most grades: REGAN, BRIAN C at 3.29 over 351 grades and PUTTERMAN, SETH J at 3.00 over 77 grades.

A range
45%
P/NP
1%
D/F/W
3.6%

Full grade history for PHYSICS 17

What students say

dibs measures outcomes: grades, seats, how fast it fills. For what the class is actually like to sit in, BruinWalk has the reviews.

What the work looks like

  • 2 exams, 4 mentions in past reviews
  • Quizzes mentioned, no number given, 1 mention in past reviews
  • Problem sets mentioned, no number given, 1 mention in past reviews

Based on 82 reviews; source checked 6 days ago. dibs counts only what a review actually states, so a kind of work nobody mentioned is absent rather than zero.

Will it still be here

high risk chance of closing before your enrollment pass.

Final enrollment per term from four years of grade data. Summer excluded: different population, different pass structure.

  • 8421F
  • 2822W
  • 7622F
  • 4923S
  • 5023F
  • 2824W
  • 6824F
  • 4325W
  • 7825F
Enrollment by term: 21F 84, 22W 28, 22F 76, 23S 49, 23F 50, 24W 28, 24F 68, 25W 43, 25F 78

Peak 84 · most recent 25F at 78

Seats over time

Nothing read since 16 Oct, 11 hours ago. Over about 2 months before that, filled by 60.

3 times reopened
108 of 112 · 4 left
18 Aug 18:4017 Sep 04:4116 Oct 14:42 · 11 hours ago
Checked 168 of the 1191 hours with hourly history, 14%. No reading was recorded in 1023 hours. dibs had no hourly record before 28 Aug, which is the other 222 of 1413 plotted.108 of 112 enrolled at the newest reading, 11 hours ago, with 4 left. Seats from 18 Aug 18:40 to 16 Oct 14:42, 48 to 108. Checks are not continuous monitoring. Changes between checks may be missed.

A dot is a reading where something moved: the seat count, the status, or the waitlist. Flat between dots joins recorded counts; changes between reads may be missed. The line starts when dibs first saw this section rather than reaching back before it existed. The last one is the last time dibs read this section, moved or not, and that was 11 hours ago. It is where the line stops, not where the count is now.

Show the readings (26)
Recorded Enrolled Capacity Status Waitlist Hours read
16 Oct 14:42 108 112 open - 23 of 155
10 Oct 04:42 108 112 open - 28 of 220
1 Oct 01:32 109 112 open - 2 of 4
30 Sep 22:02 110 112 open - 2 of 4
30 Sep 19:22 109 112 open - 8 of 50
28 Sep 18:52 110 112 open - 4 of 21
27 Sep 22:42 112 112 closed - 13 of 79
24 Sep 16:12 110 112 open - 4 of 19
23 Sep 22:32 109 112 open - 11 of 71
21 Sep 00:02 110 112 open - 7 of 47
19 Sep 02:52 111 112 open - 6 of 36
17 Sep 15:52 112 112 closed - 2 of 8
17 Sep 08:52 89 113 open - 2 of 8
17 Sep 01:52 88 113 open - 3 of 14
16 Sep 12:22 85 113 open - 3 of 15
15 Sep 22:32 84 113 open - 2 of 5
15 Sep 18:32 80 113 open - 2 of 4
15 Sep 15:02 76 113 open - 2 of 5
15 Sep 11:32 74 113 open - 2 of 5
15 Sep 07:42 69 113 open - 2 of 8
15 Sep 00:02 51 54 open - 2 of 5
14 Sep 20:32 62 113 open - 10 of 66
12 Sep 03:37 51 54 open - 11 of 64
9 Sep 12:40 52 54 open - 20 of 161
2 Sep 20:40 52 52 closed - 21 of 363, 222 no hourly record
18 Aug 18:40 48 48 closed - -
How readings and alerts work

Dated seat counts can be available even when hourly check history is missing. Gaps do not show whether seats changed between observations.

Seat counts show the last successful read, not live availability. Refreshes can be delayed by request limits or upstream interruptions. Watched sections receive priority, but an hourly update for every section is not guaranteed.

The registrar can change a seat count between our checks. Alerts depend on dibs detecting an opening and completing delivery; a quiet watch does not prove that no seat opened. Check the registrar before enrolling.

Class chat

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Dis 1B shares one room with Lec 1 and every other discussion under it, because that is what a student means by "my class".

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