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MECH&AE 105A · Lec 1

Introduction to Engineering Thermodynamics

Fall 2026Stubblebine, M.J.4 units

Seats, time, final and grades

Seats

Open, 19 seats left.

111 of 130 enrolled, lecture and all discussions summed.

Meets

MW 4:00pm-5:50pm

Lecture only. You also attend a discussion, listed below.

Final

Thu 10 Dec, 11:30am to 2:30pm

One exam for the whole class, Los Angeles time.

Read 3 days ago.

Grades

3.16
predicted, all instructors · 1,345 grades

1,345 letter grades, everyone who has taught MECH&AE 105A.

Read 40 minutes ago. This is a recent reading, not a live seat count.

dibs has seen this section open 10 times since 17 August. The last time was 17 September. 6 of those were readings 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.

Enroll on the registrar (opens in a new tab) Sign in to watch for an opening

Watching is the one thing here that needs an account, because an alert needs somewhere to go. Everything else on this page works signed out.

Put this class on a board

A board is one quarter you are drafting, so it needs an account to live in. Signing in brings you straight back to this page, with this class still in front of you.

Before you can enroll

Registrar's Restrictions cell, read 3 days ago: "Undergraduate School of Engineering Majors or Environmental Engineering Minors".

Tell dibs what you have already taken and this line will say which of these you have. Your list.

From the registrar

Students who enroll in upper-division courses offered by the Samueli School without completing the requisites are subject to disenrollment after the second class meeting. If necessary, consult with an OASA counselor through MyUCLA Message Center.

Restrictions read 3 days ago. dibs re-reads these slowly because they rarely change; watch the section and it moves to every 6 hours.

Discussions

You enroll in the discussion, not the lecture, so the seat figure above is the sum across all of them and can read open while every discussion you could actually join is full.

2 discussions, all open.

  • Dis 1A

    F 8:00am-9:50am

    Park, D.B.

    Open, 9 seats left.

  • Dis 1B

    F 4:00pm-5:50pm

    Su, C.

    Open, 10 seats left.

When it meets

Mon
Tue
Wed
Thu
Fri
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm

Meets: MW 4:00pm-5:50pm

Discussions: F 8:00am-9:50am · F 4:00pm-5:50pm

Haines Hall A18

Grades

3.16
predicted, all instructors · 1,345 grades

Of the 3 other people in the grade record for MECH&AE 105A, the 2 with the most grades: AMAR, RAVNESH C at 3.23 over 1,195 grades and PILON, LAURENT G at 2.54 over 125 grades.

A range
38%
P/NP
-
letter grade only
D/F/W
3.3%

Full grade history for MECH&AE 105A

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

  • 1 exam, said by 11 reviewers
  • 4 quizzes, said by 4 reviewers
  • No problem sets, said by 10 reviewers

Read from 82 reviews 17 days ago. dibs counts only what a review actually states, so a kind of work nobody mentioned is absent rather than zero.

Reviews for MECH&AE 105A Search the reviews for M.J. Stubblebine

Will it still be here

medium 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.

  • 10621F
  • 14822W
  • 11222S
  • 8422F
  • 13723W
  • 8223F
  • 13024W
  • 10124S
  • 11324F
  • 14425W
  • 12925S
Enrollment by term: 21F 106, 22W 148, 22S 112, 22F 84, 23W 137, 23F 82, 24W 130, 24S 101, 24F 113, 25W 144, 25S 129

Peak 148 · most recent 25S at 129

Seats over time

Filled by 27 over about 2 months

10 times reopened
111 of 130 · 19 left in its discussions
17 Aug 15:079 Sep 09:042 Oct 03:02
dibs read 168 of the 700 hours its hourly record covers, 24%, and did not look in 532. dibs had no hourly record before 3 Sep, which is the other 393 of 1093 plotted.111 of 130 enrolled at the newest reading, 40 minutes ago, with 19 left in its discussions. Seats from 17 Aug 15:07 to 2 Oct 03:02, 84 to 111. dibs read 168 of the 700 hours its hourly record here covers, 24%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 532 hours dibs was keeping a record and did not reach this section. Nothing before 3 September at 00:00, where this section's record starts, has a read either way, which is 393 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

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: 40 minutes ago.

Show the readings (51)
Recorded Enrolled Capacity Status Waitlist Hours read
2 Oct 03:02 111 130 open - 9 of 31
30 Sep 21:42 111 130 open - 3 of 8
30 Sep 14:42 112 130 open - 2 of 4
30 Sep 11:12 113 130 open - 4 of 13
29 Sep 23:42 112 130 open - 2 of 5
29 Sep 19:22 113 130 open - 2 of 5
29 Sep 15:52 112 130 open - 6 of 18
28 Sep 22:32 113 130 open - 2 of 4
28 Sep 19:02 116 130 open - 2 of 5
28 Sep 15:32 115 130 open - 7 of 22
27 Sep 18:12 116 130 open - 2 of 5
27 Sep 14:42 115 130 open - 8 of 26
26 Sep 13:32 114 130 open - 4 of 11
26 Sep 03:42 113 130 open - 4 of 11
25 Sep 17:02 114 130 open - 3 of 8
25 Sep 10:02 115 130 open - 2 of 5
25 Sep 06:32 116 130 open - 5 of 16
24 Sep 15:52 115 130 open - 2 of 4
24 Sep 12:22 114 130 open - 6 of 20
23 Sep 17:52 115 130 open - 12 of 42
22 Sep 00:22 117 130 open - 15 of 52
19 Sep 21:22 116 130 open - 2 of 4
19 Sep 18:02 118 130 open - 2 of 4
19 Sep 15:32 116 130 open - 7 of 22
18 Sep 18:32 118 130 open - 7 of 23
17 Sep 20:32 119 130 open - 2 of 4
17 Sep 17:02 118 130 open - 3 of 8
17 Sep 10:02 119 130 open - 3 of 9
17 Sep 02:02 120 120 closed - 3 of 8
16 Sep 19:02 119 120 open - 12 of 43
15 Sep 01:32 120 120 closed - 2 of 4
14 Sep 22:02 114 114 closed - 3 of 8
14 Sep 15:02 119 120 open - 2 of 5
14 Sep 11:32 114 114 closed - 2 of 4
14 Sep 08:02 117 120 open - 21 of 68
11 Sep 13:40 114 114 closed - 30 of 207, 1 no hourly record
2 Sep 23:40 113 113 closed - no hourly record
2 Sep 09:40 109 114 open - no hourly record
1 Sep 02:40 109 109 closed - no hourly record
1 Sep 00:40 106 106 closed - no hourly record
31 Aug 20:40 109 110 open - no hourly record
28 Aug 01:40 106 106 closed - no hourly record
27 Aug 22:40 102 106 open - no hourly record
27 Aug 21:40 106 106 closed - no hourly record
27 Aug 20:40 102 106 open - no hourly record
27 Aug 19:40 106 106 closed - no hourly record
27 Aug 09:40 102 106 open - no hourly record
21 Aug 20:40 102 102 closed - no hourly record
21 Aug 13:40 93 101 open - no hourly record
18 Aug 19:40 93 93 closed - no hourly record
17 Aug 15:07 84 93 open - -
How readings and alerts work

A reading and an hourly record are different things, and most charts here hold more of the second missing than present. dibs has taken readings of a section since long before it began keeping an hour-by-hour log of when it looked, so the empty stretches are dibs saying it was not keeping that log yet, not that it looked and found nothing. That is the age of the record and not a fault.

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.

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