Ms. Opossum graphs COVID data (was @anarchodelphis).
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ratnegative.bsky.social
Ms. Opossum graphs COVID data (was @anarchodelphis).
@ratnegative.bsky.social
4.8K followers 190 following 1.8K posts
🏴🇭🇰 🤝 🇵🇸🇸🇩🇹🇼
◉ she/her/佢 ◉
◉ See "Media" tab for work. ◉
COVID-dodging Hongkonger on xʷməθkʷəy̓əm, səl̓ilwətaɬ & Sḵwx̱wú7mesh land.
Research, maps: https://linktr.ee/anarchodelphis
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Reposted by Ms. Opossum graphs COVID data (was @anarchodelphis).
mamatoronto.bsky.social
All I want for Christmas if for my kid to breathe clean air at school, for adults to get why that’s important, & take steps to make it so

Clean air for kids & staff in schools & daycares shouldn’t be controversial

If you agree, please sign & share

bsky.app/profile/mama...
mamatoronto.bsky.social TorontoBikeMama @mamatoronto.bsky.social · 25d
Clean air for kids & staff in schools & daycares shouldn’t be controversial

No IAQ policy at any level of govt ensuring indoor air is clean & safe to breathe atm

Petition to Toronto Board of Health to direct TO Public Health to adopt Health🇨🇦's new IAQ Guidance
preview.mailerlite.io/preview/1297...
Clean Indoor Air Toronto
cleanindoorairto.ca
December 25, 2025 at 12:03 PM
ratnegative.bsky.social
He saw how the Democrats have completely lost the left and thought "I want that"
December 23, 2025 at 10:23 PM
ratnegative.bsky.social
So true.
December 22, 2025 at 6:01 PM
Reposted by Ms. Opossum graphs COVID data (was @anarchodelphis).
luckytran.com
Alt text version
Poster in style of Fallout Tv series and game: a person wearing a n95 mask giving a thumbs up on yellow background. Text reads: Safety first! Your future matters. Wear a mask.
December 20, 2025 at 11:28 PM
ratnegative.bsky.social
Holy hell...
December 22, 2025 at 4:07 AM
Reposted by Ms. Opossum graphs COVID data (was @anarchodelphis).
mark-ungrin.bsky.social
(and if infection control kills a patient, it's even easier to deal with - they'll just say they were "vulnerable" and the usual sycophants will make the story about how sad Dr Henry is that people expect her to be competent)

I cannot believe people buy the claim these muppets understand science.
mark-ungrin.bsky.social Mark Ungrin @mark-ungrin.bsky.social · Nov 21
The negligent, outdated beliefs of medicine's management class (everywhere; from the UK inquiry here) contrasted with well-understood science from 👉1934👈. If you got sick after being told that COVID falls to the ground within 3 feet and N95/FFP2/FFP3 respirators aren't needed, 👉it was their fault.👈
The focus on handwashing over ventilation 12.32. As 2020 progressed, it was increasingly understood that airborne transmission of Covid-19 was a substantial risk and, by 23 July 2020, SAGE had endorsed the importance of good ventilation. ON AIR-BORNE INFECTION.* STUDY II. DROPLETS AND DROPLET NUCLEI. BY W. F. WELLS, t (Beceived for publication June 14, 1934.) The infective range of droplets expelled from the nose or mouth depends primarily upon the time interval spent in the atmosphere. The unresisted falling time from mouth to ground can be readily shown by Newton's Law to be less than a second. Air resistance becomes a negligible factor in determining the time of fall of droplets larger than a tenth millimeter through the height of a man. As droplets decrease in diameter the volume and weight, or gravitational pull, decrease more rapidly than the surface area which determines the resistance to fall through air. Particles smaller than a tenth millimeter diameter soon reach a velocity which remains constant. This fact is expressed by Stokes' Law % which says that the velocity is proportional to the surface area of the droplet or to the square of its diameter. droplets would reach the ground in less than ten seconds (table 1). Whether droplets falling two meters obey Stokes' law or Newton's law, therefore, the time they spend in the air would be small, and their radius of spread would be limited to a few feet. Infection caused by such droplets would therefore appear to be limited both in time and space to the immediate vicinity of the source. TABLE 1. Settling of water droplets in saturated air. Diameter of droplet Falling velocity Time in seconds of Millimeters Centimeters per second falling two meters > 1.0 981 X time in seconds .6 .1 30. 6. .01 .3 600. = 10 minutes .001 .003 60,000. = 16.6 hours It would be incorrect to conclude merely from this, however, that air receiving infected droplets cannot convey such infection long distances. To do so would be to neglect a most important characteristic of liquid droplets, namely their tendency to evaporate. Evaporation causes the volume of water droplets to change, and this change becomes more rapid as the droplet decreases in size. Careful determination of the rate of evaporation has proved that at constant temperature and humidity the rate of change of surface is constant. The life of droplets in unsaturated air is therefore proportional to the square of their diameter. It becomes quite short for small droplets, in fact much shorter than their time of fall if they settled without evaporation. Approximate evaporation times for droplets of different sizes are tabulated below. We find, therefore, that minute droplets settle slowly and evapoTABLE 2. Evaporation time of water droplets in unsaturated air at 18° C* Diameter of droplet Evaporation time Millimeters Seconds 2 660. 1 165. .5 41. .2 6.6 .1 1.7 .05 4 * Computed from data given in chapt. 15, "Evaporation of Droplets." Smoke: A Study of Aerial Disperse Systems; R. Whytlaw-Gray and H. S. Patterson, page 176 Edward Arnold & Co., London, 1932. A chart from Wells (1934) showing that particles smaller than 100 microns shrink (via evaporation) to a size small enough to remain airborne indefinitely before they have time to fall to the ground. Associated text reads: "This is an important difference since it produces a complete change in state of small droplets in comparison with large drops. On chart 1 the curves of evaporation time and falling time (to fall two meters in saturated air) are seen to be almost similar in shape but opposite in direction. The point of intersection gives the size of droplets which would evaporate and particles which would fall two meters in the same time. Somewhere between .1 and .2 mm. lies the droplet size which identifies droplets of mouth spray that reach the ground within the life of the droplet as against droplets that evaporate and remain in the air as droplet nuclei with attached infection."
December 19, 2025 at 2:30 AM