# Barasch 1979: Light Flash Produced by an Atmospheric Nuclear Explosion

> Guy E. (Los Alamos Scientific Laboratory) Barasch, 1979. 1 records on Mysteries Department cite it. Background on the double-flash signature.

Source: https://mysteriesdept.com/sources/SRC0CW4WHH64DDQ/light-flash-produced-by-an-atmospheric-nuclear-explosion  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Sources](https://mysteriesdept.com/sources)[1979 Vela incident](https://mysteriesdept.com/mysteries/vela-incident)Barasch 1979

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# Light Flash Produced by an Atmospheric Nuclear Explosion

Guy E. (Los Alamos Scientific Laboratory) Barasch, 1979. _National Security Archive Electronic Briefing Book 190, Document 2_.

An unclassified Los Alamos report of November 1979 on the double-flash light curve of atmospheric nuclear explosions, the physics the Vela bhangmeters were built to detect.

**1979 Vela incident** ReportChecked against the original0

## What it's used for here

Background on the double-flash signature.

## The document 4 pages

[Pages]Page 1 of 4

[![Page 1](https://mysteriesdept.com/files/v/c21fe54f73798b498c2231471dee3aa02855591edb90cfa7e72e80b73c65e01a/p1)1][![Page 2](https://mysteriesdept.com/files/v/c21fe54f73798b498c2231471dee3aa02855591edb90cfa7e72e80b73c65e01a/p2)2][![Page 3](https://mysteriesdept.com/files/v/c21fe54f73798b498c2231471dee3aa02855591edb90cfa7e72e80b73c65e01a/p3)3][![Page 4](https://mysteriesdept.com/files/v/c21fe54f73798b498c2231471dee3aa02855591edb90cfa7e72e80b73c65e01a/p4)4]

![Page 1 of Light Flash Produced by an Atmospheric Nuclear Explosion](https://mysteriesdept.com/files/v/c21fe54f73798b498c2231471dee3aa02855591edb90cfa7e72e80b73c65e01a/p1)

Pages from the file we keep.

## Cited by on this site 1 record

[The 1979 Vela incident](https://mysteriesdept.com/mysteries/vela-incident)

The mystery article

MYS

## Cite it

```
Barasch, G. E. (. A. S. L. (1979). Light Flash Produced by an Atmospheric Nuclear Explosion. National Security Archive Electronic Briefing Book 190, Document 2. https://nsarchive2.gwu.edu/NSAEBB/NSAEBB190/02.pdf
```

[Read it free at nsarchive2.gwu.edu](https://nsarchive2.gwu.edu/NSAEBB/NSAEBB190/02.pdf)[Download PDF · 497 KB](https://mysteriesdept.com/files/d/c21fe54f73798b498c2231471dee3aa02855591edb90cfa7e72e80b73c65e01a)

Anyone can read it here; members can download it.

Key

**SRC** 0CW4WHH64DDQ

Kind

Report

Rights

public-domain

Kept

27 Oct 2026

Checked

Against the published original

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The record

Bibliographic records are CC0. Take this one as CSL-JSON, BibTeX or RIS.

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