Discover and read the best of Twitter Threads about #filter

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How #respirators actually work and which type is best?

I see many claims #masks don't work. This thread will explain *how* they block #viruses much smaller than the size of the holes in the #filter and why you can still smell nasty things while wearing effective masks. 🧵1/ Image showing size comparison of white blood cell, red blood cell, light dust particle and COVID-19 virus. Image from: https://theconversation.com/making-masks-at-home-what-you-need-to-know-about-how-to-reduce-the-transmission-of-coronavirus-136122
This thread is long so if you would like an unrolled one page web view that is easier to read or share, look at this tweet to find the link more quickly ( ). 2/
One of the issues is that there are different types of masks that are designed for different purposes. Cloth masks and the common blue earloop procedure masks were never designed to protect people from airborne pathogens that hang in the air for extended periods of time. 3/
Read 51 tweets
#Trading is not #Tough, human mind make it #Complex

Here is one #Setup that is working from decades and Even an #Amateur trader can trade it #Efficiently
First Look into this Self Explanatory Chart to create a #Mental_Model, how this pattern #Bull_Flag looks exactly.
So Lets Talk About Different Stages and What you need to keep in Mind while looking into this #Bull_Flag Setup.
Read 11 tweets
I promised I would provide a way to calculate room air exchange, using a simple MERV-13 filter & a box fan. The sweet spot seems to be 6 exchanges per hour. This means all the air in the room is moved through the filter 6 times in 1 hour. 1/6 #ProtectHCWs #ProtectKids #Covid #BA2
First we need to get the volume of a room. It doesn’t need to be perfect! But note units are important. We are using feet/inches here. Use this calculator & input the measurements, A, B, & C as shown in the graphic below. Order is NOT important 2/6 #Filter vcalc.com/wiki/KurtHeckm…
I found a company that did calculations using a box fan on high speed & MERV-13 filters of different depths. The thicker the filter the BETTER the air flow! Strange but true. Note I added the Air Volume based on a 20” square box fan. 3/6 #N95 #BoxFanFilter texairfilters.com/how-a-merv-13-…
Read 6 tweets
Logik zum #Öffnungsplan der #Bundesregierung
Wo, wie und wie schnell infiziert man sich mit dem #Coronavirus? Solange die Regierung Entscheidungen - magels Datenlage - ohne Evidenz trifft, solange ist es Willkür, wann welche Bereiche geöffnet und andere geschlossen bleiben #Spahn
Die Mutante #B117 erreicht in diesen Tagen -in den ersten Bundesländern- ihre #Dominanz. #R steigt zeitgleich und die #Regierung erhöht per #Öffnungsplan die #Mobilität: B117, Öffnungsplan u. gesteigerte Mobilität sind drei Faktoren die logisch #R exponentiell beeinflussen können
Zeitgleich werden #Kitas u. #Schulen geöffnet, also die Versammlungsorte, vor deren Öffnung uns Experten und Ärzte aus #Israel u. Kanada warnen. Begründet wird die #Öffnung mit "Meinungen" von Wissenschaftlern, deren #Studien -manipulierte Daten- aus #Schweden zitieren #twlz #KMK
Read 243 tweets
#vss365
I started playing #guitar in college. Some of my friends back home played, so I thought I'd learn. It's been years since I kept up with it. With no job and an empty house, I had time. Plus, I could crank up my amp. Ava would have hated it. All the more reason to do it.
#vss365
Strumming a few chords or playing a riff through a loud amp usually makes me feel better. It's more of a distraction this time. My amp is a little old. Even a #ragpicker might pass on it. "If you're not going to play it, sell it," Ava nagged. Life always got in the way.
#vss365
Or I got in the way. Not even ten years ago I kept getting sick all the time. Painful stomach cramps would radiate weakness throughout my body. I learned how to wash it away like healing #rainwater. That's when I really started to figure out who I was and what I could do.
Read 1104 tweets

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