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PHYSICS 4AL

Physics Laboratory for Scientists and Engineers: Mechanics

2 units

Sections & times

Lab.

Fall 2026: 13 sections. 1 section is open. The oldest of these readings was 2 hours ago.

Grades

3.95

Average grade awarded in PHYSICS 4AL. Not a student rating: this is what the grades were.

In the A range

97%

of the 4,115 letter grades

D, F or W

0.2%

of every letter grade awarded, plus withdrawals

Taken pass/no pass

-

the registrar has this letter grade only this term

The registrar's own records: 4,115 grades over 17 terms, Fall 2021 to Fall 2025. Every instructor is pooled here.

What is inside that record

4 of those terms are summer sessions, and summer sessions are counted here.

The table below splits them, and term averages across those 17 terms ran 3.71 to 3.99.

Historical grades for ARISAKA, KATSUSHI, across recorded terms. The course summary above includes all professors.

  • A+ 712 · 24.3%
  • A 1,913 · 65.4%
  • A- 224 · 7.7%
  • B+ 38 · 1.3%
  • B 20 · 0.7%
  • B- 4 · 0.1%
  • C+ 2 · 0.1%
  • C 5 · 0.2%
  • C- 1 · 0.0%
  • F 7 · 0.2%
  • I 3 of 2,929

Percentages are of the 2,926 letter grades. Grey bars are non-letter outcomes: incompletes (I).

How the non-letter outcomes are counted

They are excluded from the GPA entirely rather than scored, because counting a P as a 4.0 would be a fabrication.

By instructor

Predicted GPA, raw average, sample size, terms, A range and the workload reviewers reported for every instructor with a grade record in this course
Instructor Predicted GPA Raw n Terms A range Workload Fall 2026
ARISAKA, KATSUSHI reviews ↗ 3.94 3.94 2,926 13 97% average Waitlist, 0 of 2 places taken
NI, NI reviews ↗ 3.94 3.94 841 3 97% very light not teaching it
KAMAHA, ALVINE reviews ↗ 3.99 3.99 348 1 100% - not teaching it
Why Predicted is not the Raw average

“Predicted” is shrunk toward the course average, which is itself shrunk toward the department, so an instructor with a handful of students sits near the course mean rather than topping the list.

Grade records describe outcomes. For what a course is like to take, read student reviews written on dibs below or follow the separate external review link.

Reviews for PHYSICS 4AL

Workload and assignments

Work types reported in BruinWalk reviews of this course, across recorded instructors and terms. They may differ from this term's syllabus.

What the work looks like

  • No exams, said by 1 reviewer
  • No quizzes, said by 1 reviewer
  • Papers mentioned, no number given, said by 4 reviewers
  • Problem sets mentioned, no number given, said by 1 reviewer
  • 1 project, said by 2 reviewers
  • Group works mentioned, no number given, said by 1 reviewer
  • Presentations mentioned, no number given, said by 1 reviewer
  • 7 labs, said by 2 reviewers

Read from 94 reviews 26 days ago. dibs counts only what a review actually states, so a kind of work nobody mentioned is absent rather than zero.

Read the source reviews

What comes first

The chain dibs can see is 4 courses long before PHYSICS 4AL. dibs has read a class page for every course in it.

Counted in courses rather than quarters: dibs does not know which of them a department lets you take together.

In Falls

Ran in 5 of the last 5 Falls.

From the terms dibs holds, which start in Fall 2021 and exclude summer. A department can run a course in a quarter it never has before.

From the registrar's catalog

Laboratory, four hours. Enforced requisite: course 1A or 1AH. Enforced corequisite: course 1B or 1BH. Computerized measurements of uniform and accelerated motion, including oscillations. Analysis of data and comparison of results to predictions, including least-squares fitting. Conception, execution, and presentation of creative projects involving motion. Letter grading.

Sections in Fall 2026

Seat counts as of : the oldest of these 13 readings. Seat readings are snapshots, not live availability. Their timestamps show when dibs last checked.

Final enrollment, averaged across each term's sections: between 22 and 32 a term over 13 terms, summer excluded, most recently 28 in Fall 2025. That is the shape across years, not this term, which is above.

From the people who took it

Student reviews

What taking PHYSICS 4AL was like: the work, the teaching, and what students wish they’d known.

Write a review

Your experience could be the first.

No student reviews are available to read on dibs for this course yet. Took it? Tell the next person what helped, what was hard, and how you spent your time.

Looking for more perspectives?

External reviews are separate and do not count toward the dibs rating.

Read reviews on BruinWalk

Community guidelines

Seats over time in Fall 2026

How each lecture has filled since dibs first saw it. This course runs 13 lectures; the legend under the chart picks one.

A dot is a reading where something moved: the seat count, the status, or the waitlist.

What a flat run means, and where a line starts

Flat between dots means it did not drift, it held and then jumped, and a line starts when dibs first saw that lecture rather than reaching back before it existed. A lecture that has never moved draws a flat line across the whole window, and one with two or three readings draws a line joining them, which is too few to read a trend from.

Lab 1 · Arisaka, K. and Kang, B. · 27 of 27 enrolled

Nothing read since 1 Oct, 2 hours ago. Over about 1 month before that, same seat count, but the status went closed to waitlist, the waitlist went 2 of 2 to 0 of 2, and the seat count moved and came back.

27 of 27 · no seats left
18 Aug 22:409 Sep 20:011 Oct 17:22 · 2 hours ago
dibs read 168 of the 537 hours its hourly record covers, 31%, and did not look in 369. dibs had no hourly record before 9 Sep, which is the other 515 of 1052 plotted.27 of 27 enrolled at the newest reading, 2 hours ago, and no seats left. Seats from 18 Aug 22:40 to 1 Oct 17:22, 27 to 27. dibs read 168 of the 537 hours its hourly record here covers, 31%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 369 hours dibs was keeping a record and did not reach this section. Nothing before 9 September at 09:00, where this section's record starts, has a read either way, which is 515 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.

Lab 2 · Arisaka, K. and Pandey, R. · 27 of 27 enrolled

Nothing read since 1 Oct, 2 hours ago. Over about 1 month before that, unchanged.

27 of 27 · no seats left

Both readings say 27 of 27.

18 Aug 22:409 Sep 20:011 Oct 17:22 · 2 hours ago
dibs read 168 of the 537 hours its hourly record covers, 31%, and did not look in 369. dibs had no hourly record before 9 Sep, which is the other 515 of 1052 plotted.27 of 27 enrolled at the newest reading, 2 hours ago, and no seats left. Seats from 18 Aug 22:40 to 1 Oct 17:22, 27 to 27. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 537 hours its hourly record here covers, 31%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 369 hours dibs was keeping a record and did not reach this section. Nothing before 9 September at 09:00, where this section's record starts, has a read either way, which is 515 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.

Lab 3 · Arisaka, K. and Pandey, R. · 27 of 27 enrolled

Nothing read since 1 Oct, 2 hours ago. Over about 1 month before that, same seat count, but the status moved and came back and the waitlist moved and came back.

27 of 27 · no seats left

All 8 readings say 27 of 27.

18 Aug 22:409 Sep 20:011 Oct 17:22 · 2 hours ago
dibs read 168 of the 537 hours its hourly record covers, 31%, and did not look in 369. dibs had no hourly record before 9 Sep, which is the other 515 of 1052 plotted.27 of 27 enrolled at the newest reading, 2 hours ago, and no seats left. Seats from 18 Aug 22:40 to 1 Oct 17:22, 27 to 27. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 537 hours its hourly record here covers, 31%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 369 hours dibs was keeping a record and did not reach this section. Nothing before 9 September at 09:00, where this section's record starts, has a read either way, which is 515 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.

Lab 4 · Arisaka, K. and Cheng, Y. · 27 of 27 enrolled

Nothing read since 1 Oct, 2 hours ago. Over about 1 month before that, same seat count, but the status moved and came back and the waitlist moved and came back.

27 of 27 · no seats left

All 10 readings say 27 of 27.

18 Aug 22:409 Sep 20:011 Oct 17:22 · 2 hours ago
dibs read 168 of the 537 hours its hourly record covers, 31%, and did not look in 369. dibs had no hourly record before 9 Sep, which is the other 515 of 1052 plotted.27 of 27 enrolled at the newest reading, 2 hours ago, and no seats left. Seats from 18 Aug 22:40 to 1 Oct 17:22, 27 to 27. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 537 hours its hourly record here covers, 31%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 369 hours dibs was keeping a record and did not reach this section. Nothing before 9 September at 09:00, where this section's record starts, has a read either way, which is 515 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.

Lab 5 · Arisaka, K. and Fiedorowicz, O. · 27 of 27 enrolled

Nothing read since 1 Oct, 2 hours ago. Over about 1 month before that, same seat count, but the status went closed to waitlist and the waitlist went 2 of 2 to 1 of 2.

27 of 27 · no seats left

All 12 readings say 27 of 27.

18 Aug 22:409 Sep 20:011 Oct 17:22 · 2 hours ago
dibs read 168 of the 537 hours its hourly record covers, 31%, and did not look in 369. dibs had no hourly record before 9 Sep, which is the other 515 of 1052 plotted.27 of 27 enrolled at the newest reading, 2 hours ago, and no seats left. Seats from 18 Aug 22:40 to 1 Oct 17:22, 27 to 27. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 537 hours its hourly record here covers, 31%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 369 hours dibs was keeping a record and did not reach this section. Nothing before 9 September at 09:00, where this section's record starts, has a read either way, which is 515 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.

Lab 6 · Arisaka, K. and Valle, M. · 27 of 27 enrolled

Nothing read since 1 Oct, 2 hours ago. Over about 1 month before that, same seat count, but the status moved and came back and the waitlist moved and came back.

27 of 27 · no seats left

All 12 readings say 27 of 27.

18 Aug 22:409 Sep 20:011 Oct 17:22 · 2 hours ago
dibs read 168 of the 537 hours its hourly record covers, 31%, and did not look in 369. dibs had no hourly record before 9 Sep, which is the other 515 of 1052 plotted.27 of 27 enrolled at the newest reading, 2 hours ago, and no seats left. Seats from 18 Aug 22:40 to 1 Oct 17:22, 27 to 27. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 537 hours its hourly record here covers, 31%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 369 hours dibs was keeping a record and did not reach this section. Nothing before 9 September at 09:00, where this section's record starts, has a read either way, which is 515 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.

Lab 7 · Arisaka, K. and Valle, M. · 27 of 27 enrolled

Nothing read since 1 Oct, 2 hours ago. Over about 1 month before that, same seat count, but the status went closed to waitlist and the waitlist went 2 of 2 to 1 of 2.

27 of 27 · no seats left

All 7 readings say 27 of 27.

18 Aug 22:409 Sep 20:011 Oct 17:22 · 2 hours ago
dibs read 168 of the 537 hours its hourly record covers, 31%, and did not look in 369. dibs had no hourly record before 9 Sep, which is the other 515 of 1052 plotted.27 of 27 enrolled at the newest reading, 2 hours ago, and no seats left. Seats from 18 Aug 22:40 to 1 Oct 17:22, 27 to 27. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 537 hours its hourly record here covers, 31%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 369 hours dibs was keeping a record and did not reach this section. Nothing before 9 September at 09:00, where this section's record starts, has a read either way, which is 515 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.

Lab 8 · Arisaka, K. and Cheng, Y. · 27 of 27 enrolled

Nothing read since 1 Oct, 2 hours ago. Over about 1 month before that, same seat count, but the status moved and came back and the waitlist moved and came back.

27 of 27 · no seats left

All 8 readings say 27 of 27.

18 Aug 22:409 Sep 20:011 Oct 17:22 · 2 hours ago
dibs read 168 of the 537 hours its hourly record covers, 31%, and did not look in 369. dibs had no hourly record before 9 Sep, which is the other 515 of 1052 plotted.27 of 27 enrolled at the newest reading, 2 hours ago, and no seats left. Seats from 18 Aug 22:40 to 1 Oct 17:22, 27 to 27. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 537 hours its hourly record here covers, 31%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 369 hours dibs was keeping a record and did not reach this section. Nothing before 9 September at 09:00, where this section's record starts, has a read either way, which is 515 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.

Lab 9 · Arisaka, K. and Chen, P. · 27 of 27 enrolled

Nothing read since 1 Oct, 2 hours ago. Over about 1 month before that, same seat count, but the status went closed to waitlist, the waitlist went 2 of 2 to 0 of 2, and the seat count moved and came back.

27 of 27 · no seats left
18 Aug 22:409 Sep 20:011 Oct 17:22 · 2 hours ago
dibs read 168 of the 537 hours its hourly record covers, 31%, and did not look in 369. dibs had no hourly record before 9 Sep, which is the other 515 of 1052 plotted.27 of 27 enrolled at the newest reading, 2 hours ago, and no seats left. Seats from 18 Aug 22:40 to 1 Oct 17:22, 27 to 27. dibs read 168 of the 537 hours its hourly record here covers, 31%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 369 hours dibs was keeping a record and did not reach this section. Nothing before 9 September at 09:00, where this section's record starts, has a read either way, which is 515 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.

Lab 10 · Arisaka, K. and Fiedorowicz, O. · 27 of 27 enrolled

Nothing read since 1 Oct, 2 hours ago. Over about 1 month before that, same seat count, but the status went closed to waitlist and the waitlist went 2 of 2 to 0 of 2.

27 of 27 · no seats left

All 11 readings say 27 of 27.

18 Aug 22:409 Sep 20:011 Oct 17:22 · 2 hours ago
dibs read 168 of the 537 hours its hourly record covers, 31%, and did not look in 369. dibs had no hourly record before 9 Sep, which is the other 515 of 1052 plotted.27 of 27 enrolled at the newest reading, 2 hours ago, and no seats left. Seats from 18 Aug 22:40 to 1 Oct 17:22, 27 to 27. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 537 hours its hourly record here covers, 31%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 369 hours dibs was keeping a record and did not reach this section. Nothing before 9 September at 09:00, where this section's record starts, has a read either way, which is 515 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.

Lab 11 · Patel, H. and Arisaka, K. · 27 of 27 enrolled

Nothing read since 1 Oct, 2 hours ago. Over about 1 month before that, same seat count, but the status moved and came back and the waitlist moved and came back.

27 of 27 · no seats left

All 12 readings say 27 of 27.

18 Aug 22:409 Sep 20:011 Oct 17:22 · 2 hours ago
dibs read 168 of the 537 hours its hourly record covers, 31%, and did not look in 369. dibs had no hourly record before 9 Sep, which is the other 515 of 1052 plotted.27 of 27 enrolled at the newest reading, 2 hours ago, and no seats left. Seats from 18 Aug 22:40 to 1 Oct 17:22, 27 to 27. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 537 hours its hourly record here covers, 31%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 369 hours dibs was keeping a record and did not reach this section. Nothing before 9 September at 09:00, where this section's record starts, has a read either way, which is 515 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.

Lab 12 · Chen, P. and Arisaka, K. · 27 of 27 enrolled

Nothing read since 1 Oct, 2 hours ago. Over about 1 month before that, same seat count, but the status went closed to waitlist and the waitlist went 2 of 2 to 0 of 2.

27 of 27 · no seats left

All 25 readings say 27 of 27.

18 Aug 22:409 Sep 20:011 Oct 17:22 · 2 hours ago
dibs read 168 of the 537 hours its hourly record covers, 31%, and did not look in 369. dibs had no hourly record before 9 Sep, which is the other 515 of 1052 plotted.27 of 27 enrolled at the newest reading, 2 hours ago, and no seats left. Seats from 18 Aug 22:40 to 1 Oct 17:22, 27 to 27. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 537 hours its hourly record here covers, 31%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 369 hours dibs was keeping a record and did not reach this section. Nothing before 9 September at 09:00, where this section's record starts, has a read either way, which is 515 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.

Lab 13 · Patel, H. and Arisaka, K. · 22 of 27 enrolled

Nothing read since 1 Oct, 2 hours ago. Over about 1 month before that, filled by 2.

22 of 27 · 5 left
18 Aug 22:409 Sep 20:011 Oct 17:22 · 2 hours ago
dibs read 168 of the 537 hours its hourly record covers, 31%, and did not look in 369. dibs had no hourly record before 9 Sep, which is the other 515 of 1052 plotted.22 of 27 enrolled at the newest reading, 2 hours ago, with 5 left. Seats from 18 Aug 22:40 to 1 Oct 17:22, 20 to 22. dibs read 168 of the 537 hours its hourly record here covers, 31%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 369 hours dibs was keeping a record and did not reach this section. Nothing before 9 September at 09:00, where this section's record starts, has a read either way, which is 515 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.
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.