Read · Mass and energy: two accounts, one subtraction · Facsimile

Mass and energy: two accounts, one subtraction

Follow the light-energy input, the two balances, the unchanged-offset premise, and the low-speed coefficient without assigning an absolute rest energy in advance.

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. Printed journal page numbers and PDF page numbers are shown separately. The scan’s machine-readable text may contain errors.

Choose a page from the original paper

Initial selection: printed page 639, PDF page 1 of 3.

Open printed page 639 in the original PDF · Download the complete pinned PDF · Return to the explanation

A blank embedded display does not mean the source is missing. The direct PDF links work independently of this frame. Some browsers may ignore PDF page fragments; use the PDF page number shown in the directory in that case.

Source identity and limits of verification
Source record
ap-18-639
Acquired
2026-09-18
Recorded scan rights
scan-open-terms
Origin
Open the recorded archival source
Pinned SHA-256
c4770702edca3047c324a92cc0a008e27355c236b3e5e0a87d75eea630ab5f19

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.

Original-page directory

The “Open original printed page” links open the scan directly, including without JavaScript. Source identifiers select their first recorded page in the embedded viewer when JavaScript is available. A passage that spans pages retains a link to each page.

Printed page 639 · PDF page 1

Open original printed page 639

Printed page 640 · PDF page 2

Open original printed page 640

Printed page 641 · PDF page 3

Open original printed page 641