Chapin 1912.

Talking about droplets and airborne. To him "airborne" meant long-range as in many kilometers. Droplet could be through the air more than 1 or 2 m. Plus, he said study it more! We have failed to do that.

Quick thread.

12 foot droplets? I guess they shrunk over the years.

Also, ring worm may be through air.
Page 281. Plague. Droplets means through air over distance, but not long-range.

Note that MASKS WORKED.
page 295. Droplets detected, Flugge first found them during SPEAKING, LOUD TALKING, COUGHING and SNEEZING. Tiny droplets. Yup.

Note found 2 meters BEHIND the person

So clearly, our "droplet" has morphed from Chapin's droplet. That's weird.
p 296. How much do they travel? Well even Chapin said droplets fill a room. Five to six hours. Interesting.

(He then goes on to wonder if they are infective, same arguments as today ... sigh ... and he didn't have 100 years of studies to help him.)
p 297. ... on the next page Chapin talks about an experiment that found no strep in saliva in air (aerosol, let's call it), so Chapin expresses doubt this is more than minor.
Here is the minor comment:
p 298 - thinks float.

Flu floats. (He calls it a bacteria because viruses had just in 1898 and forward begun to be discovered and characterized).
p 298. Far more value and interest derive from the AIR NEAR THE SICK.
p 302. That Flugge developed the idea that TB spread by droplets, rather than dust (TB bacteria spat out, that would dry out and float around on dust).

But this is interesting, because Flugge knew that this wasn't limited to 2m, but WOULD FILL A ROOM.
p 305. There is then discussion of experiments where guinea pigs were not infected at distance of 1m from a coughing TB patient. (However, my recollection is Flugge found otherwise.)

So, two theories, dust vs droplet. But recall droplet means "stuff spat out and that floats"
Le Fin.

This was something I looked through while looking for something else (Chapin's droplets "makes sense" to him, quote)

And now you see why I say that every time I open a book I find more contradictory nonsense.

More from History

This is THEFT!

Indians had Algebra BEFORE Mμslim prophet & religion was even born.

Here is Bakhshali Manuscript dating back to 3rd century CE. It is an Algebraic treatise. Have you anything like this from the Arabian desert? No, you simply plagiarized Algebra from Indians! https://t.co/cWXRNYMgDt


The Bakhshali manuscript, which has been carbon dated to 3rd century CE, is an ancient Hindu treatise on Arithmetic and Algebra.

The Algebraic problems deal with simultaneous equations, quadratic equations, arithmetic
geometric progressions & quadratic indeterminate equations.


Bakhshali isn't earliest Indian Algebraic treatise. Early Algebra is found in Shulba Sutras dating back to at least 800 BC. Traditional Algebra reached its pinnacle in the works of Aryabhata & Bhaskara.

What makes Bakhshali special is it offers mathematical proof to its theories


It is surprising to see that even after the ancient Indian algebraic treatise has been carbon dated to 3rd century CE by Oxford, they persist with "oh we invented Algebra. It is Halal".

A brief examination of the origins of "Halal Algebra" follows

https://t.co/eFIZ98FDrI


The earliest work of "Arabic Algebra" is the "Al-Kitāb Al-Jabr wal-muqābala" by Al Khwarizmi. The term "Algebra" comes from this book ("Al Jabr").

Before writing his treatise, Al Khwarizmi visited India. His book is a plagiarism from Indian Mathematics and an obvious one at that

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