Read · Brownian motion: from wandering to a measurable law · Facsimile
Introduction · A motion the theory requires
Particles just large enough to see under a microscope must wander, Einstein argues, and how far they wander in a given time would let us count molecules. Read the argument, and open any step it leaves out.
This is the pinned original journal scan. A scan is not this edition’s transcription or translation, and does not certify their review status.
Read the original scanned pages
These are the pinned journal scans, not a newly typeset transcription or a translation.
Opening at the first recorded source page for s0. The page directory marks every page with a recorded source unit in this section; the complete paper remains available.
Initial selection: printed page 549, PDF page 1 of 12.
Open printed page 549 in the original PDF · Download the complete pinned PDF · Return to the explanation
Printed journal page numbers and PDF page numbers are counted separately. The page above is an image of the scan; the links open the pinned PDF itself. Some browsers ignore a PDF page fragment, so use the PDF page number in the directory if one opens at the start.
Source identity and limits of verification
- Source record
- ap-17-549
- Acquired
- 2026-09-17
- Scan held by
- Bell & Howell / UMI / Internet Archive
- Recorded scan rights
- scan-open-terms · Terms statement
- Origin
- Open the recorded archival source
- Pinned SHA-256
0192ff57013a2adc564d98f9e4256e65d1595634c1e0b30ae38313c415dd3507
This build checked the served file against this digest and checked the recorded page-map arithmetic. Matching bytes are not a review of a transcription, translation, or historical claim. The source inventory is navigation metadata, not the original text.
What is on each printed page
Each page link opens the scan at that page, with or without JavaScript. With JavaScript, a passage below turns the viewer above to the page where it begins, and a passage that runs onto another page links to each page it is on.
Printed page 549 · PDF page 1Section source page
Open original printed page 549
- Title
- Introduction, paragraph 1
- Introduction, paragraph 1, sentence 1
- Introduction, paragraph 1, sentence 2
- Introduction, paragraph 2
- Introduction, paragraph 2, sentence 1
- Introduction, paragraph 2, sentence 2
- §1 heading
- §1, paragraph 1 · spans PDF page 1, PDF page 2
- §1, paragraph 1, sentence 1
- §1, paragraph 1, sentence 2 · spans PDF page 1, PDF page 2
Printed page 550 · PDF page 2
Printed page 551 · PDF page 3
Printed page 552 · PDF page 4
Open original printed page 552
- §2, paragraph 2
- §2, paragraph 2, sentence 1
- §2, paragraph 2, sentence 2
- §2, paragraph 2, sentence 3
- §2, paragraph 3
- §2, paragraph 3, sentence 1
- §2, paragraph 3, sentence 2
- §2, paragraph 4 · spans PDF page 4, PDF page 5
- §2, paragraph 4, sentence 1
- §2, paragraph 4, sentence 2
- §2, paragraph 4, sentence 3
- §2, paragraph 4, sentence 4 · spans PDF page 4, PDF page 5
- §2, display equation 4
- §2, display equation 5
Printed page 553 · PDF page 5
Open original printed page 553
- §2, paragraph 4, sentence 5
- §2, display equation 6
- §2, display equation 7
- §2, paragraph 5
- §2, paragraph 5, sentence 1
- §2, paragraph 5, sentence 2
- §2, paragraph 5, sentence 3
- §2, footnote 2
- §2, display equation 8
- §2, display equation 9
- §2, paragraph 7
- §2, paragraph 7, sentence 1
- §2, paragraph 7, sentence 2
- §2, display equation 10
- §2, display equation 11
- §2, display equation 12
- §2, paragraph 8
- §2, paragraph 8, sentence 1
Printed page 554 · PDF page 6
Open original printed page 554
- §3 heading
- §3, paragraph 1
- §3, paragraph 1, sentence 1
- §3, paragraph 1, sentence 2
- §3, paragraph 1, sentence 3
- §3, paragraph 2
- §3, paragraph 2, sentence 1
- §3, paragraph 2, sentence 2
- §3, paragraph 2, sentence 3
- §3, paragraph 2, sentence 4
- §3, paragraph 2, sentence 5
- §3, paragraph 2, sentence 6
- §3, display equation 1
- §3, display equation 2
- §3, display equation 3
- §3, equation (1)
- §3, display equation 4
- §3, paragraph 5 · spans PDF page 6, PDF page 7
- §3, paragraph 5, sentence 1
- §3, paragraph 5, sentence 2 · spans PDF page 6, PDF page 7
Printed page 555 · PDF page 7
Open original printed page 555
- §3, paragraph 6
- §3, paragraph 6, sentence 1
- §3, display equation 5
- §3, display equation 6
- §3, footnote 1
- §3, paragraph 7
- §3, paragraph 7, sentence 1
- §3, paragraph 7, sentence 2
- §3, display equation 7
- §3, display equation 8
- Equation (2)
- §3, paragraph 8 · spans PDF page 7, PDF page 8
- §3, paragraph 8, sentence 1
- §3, paragraph 8, sentence 2
- §3, paragraph 8, sentence 3
- §3, paragraph 8, sentence 4
- §3, paragraph 8, sentence 5 · spans PDF page 7, PDF page 8
- §3, display equation 9
Printed page 556 · PDF page 8
Printed page 557 · PDF page 9
Open original printed page 557
- §4, paragraph 5
- §4, paragraph 5, sentence 1
- §4, paragraph 6 · spans PDF page 9, PDF page 10
- §4, paragraph 6, sentence 1
- §4, paragraph 6, sentence 2
- §4, paragraph 6, sentence 3
- §4, paragraph 6, sentence 4
- §4, paragraph 6, sentence 5
- §4, paragraph 6, sentence 6
- §4, paragraph 6, sentence 7 · spans PDF page 9, PDF page 10
- §4, display equation 4
- §4, display equation 5
- §4, display equation 6
- §4, display equation 7
- §4, display equation 8
Printed page 558 · PDF page 10
Open original printed page 558
- §4, display equation 9
- §4, equation (1)
- §4, paragraph 9
- §4, paragraph 9, sentence 1
- §4, paragraph 10
- §4, paragraph 10, sentence 1
- §4, paragraph 10, sentence 2
- §4, paragraph 10, sentence 3
- §4, paragraph 10, sentence 4
- §4, paragraph 10, sentence 5
- §4, paragraph 10, sentence 6
- §4, paragraph 10, sentence 7
- §4, display equation 10
- §4, display equation 11
- §4, paragraph 11 · spans PDF page 10, PDF page 11
- §4, paragraph 11, sentence 1 · spans PDF page 10, PDF page 11
Printed page 559 · PDF page 11
Open original printed page 559
- §4, paragraph 11, sentence 2
- §4, paragraph 11, sentence 3
- §4, display equation 12
- §4, paragraph 12
- §4, paragraph 12, sentence 1
- §4, paragraph 12, sentence 2
- §5 heading
- §5, paragraph 1
- §5, paragraph 1, sentence 1
- §5, paragraph 1, sentence 2
- §5, paragraph 1, sentence 3
- §5, paragraph 1, sentence 4
- §5, display equation 1
- §5, display equation 2
- §5, display equation 3
- §5, paragraph 2
- §5, paragraph 2, sentence 1
- §5, paragraph 2, sentence 2
- §5, paragraph 2, sentence 3
- §5, display equation 4