Newell, David

David B. Newell
NIST: Fundamental Electrical Measurements Group (Staff)
Chair, CODATA Task Group on Fundamental Physical Constants (TGFC)
Gaithersburg, Maryland

Homepage: NIST

Most recent email: 4 February 2022 at 11:30 AM

Reference: October 24, 2020, 6:27 PM Request for Formal Names
for  10−27, 10−30, 10−33, 10−36, 10−39, and 10−42 seconds
TO: CODATA Executive Committee
ATTN: Dr. David B. Newell

Dear Dr. David Newell:

I had not heard back from you regarding my request below. Do you know if there is any action in the direction of formally naming the “second” ranges defined by 10−27, 10−30, 10−33, 10−36, 10−39, and 10−42 seconds? Thank you.

Warm regards,


PS. A reference page for that earlier note is here: Thanks. -BEC


CODATA Executive Committee

Date: October 24, 2020, 6:27 PM
TO: CODATA Executive Committee
ATTN: Dr. David B. Newell

Dear Dr. David Newell:

We are doing an analysis of the range of natural groups from the Yoctosecond down to what is call the Plancksecond at Planck Time. This is our formal request of the Codata Executive Committee to consider meeting to name those six logical groups. Thank you.

Most sincerely,


Bruce Camber
The 81018 Project
500 East Fourth Street #484, Austin, TX 78701
T: 214-801-8521
The report online is here:

“The measurement of the Zeptoscond, just one sextillionth of a second — that’s a trillionth of a billionth of a second — is work led by a laser physicist, Martin Schultze. It is truly a measurement by devices, not just a mathematical calculation, and Schultze steps us back into Notation-74 to Notation-77 within our horizontally-scrolled chart.

“On to Planck Time. As fast as it is, that zeptoscond is still rather slow when compared to 10−44 seconds given within Planck Time. Next will be the Yoctosecond (10−24), just one septillionth of a second (10−24). Within our chart, the Yoctosecond ranges from Notations 65-to-67.

“No Names. The actual words for the next six categories (or groups) down to the Planck scale do not yet exist. Hardly trivial, until each group has a name, they have a limited identity and study of them is more difficult.

“The last International System of Units (SI) categories to be added were in 1991. It may well be time to call them back together again. They need to name those next six new groups: 10−27, 10−30, 10−33, 10−36, 10−39, and 10−42 seconds. Planck Time at 5.391 16(13)×10-44 seconds is within the 10−42 seconds’ expansion. It could be named a Plancksecond or PlanckSecond. To date, that combination of words has only been used casually to refer to an extremely short period of time.”