Prof Cath Noakes
@cathnoakes.bsky.social
Pro Dean Research and Innovation in Engineering and Physical Sciences at Leeds University. Indoor air, ventilation, infection risks, fluid dynamics, academia, EDI in science and a few cats. Views my own. #academicsky
This increased exposure effect is highly dependent on particle sizes. Ventilation is always beneficial for the smallest aerosols and has no effect on very large. But aerosols with an initial size 20-100 micron are more complex - how far they go and how much they evaporate depends on local airflow 4/
October 30, 2025 at 7:11 AM
This increased exposure effect is highly dependent on particle sizes. Ventilation is always beneficial for the smallest aerosols and has no effect on very large. But aerosols with an initial size 20-100 micron are more complex - how far they go and how much they evaporate depends on local airflow 4/
Just found the Ladybird book of the hovercraft from 1969. The level of detail is quite impressive including calculation of lift force and a full description of the electrical system.
October 12, 2025 at 4:50 PM
Just found the Ladybird book of the hovercraft from 1969. The level of detail is quite impressive including calculation of lift force and a full description of the electrical system.
Well we were having a sort out until we got distracted by this brick of a laptop…
October 11, 2025 at 10:34 AM
Well we were having a sort out until we got distracted by this brick of a laptop…
I guess I’m not going any further down that road then…
October 3, 2025 at 7:49 PM
I guess I’m not going any further down that road then…
You just prompted me to check the grapes and we have loads too - a bit smaller than yours but we are further north. I don’t think we’ve ever had them fully ripen before.
September 19, 2025 at 7:52 AM
You just prompted me to check the grapes and we have loads too - a bit smaller than yours but we are further north. I don’t think we’ve ever had them fully ripen before.
We had one over N Yorkshire a couple of days ago. Only lasted a couple of minutes and I was so pleased that I looked up at just the right moment.
July 10, 2025 at 9:28 PM
We had one over N Yorkshire a couple of days ago. Only lasted a couple of minutes and I was so pleased that I looked up at just the right moment.
Found my health card yesterday from when I was a baby. Check out the advice - full marks for number 3!!
July 3, 2025 at 6:18 PM
Found my health card yesterday from when I was a baby. Check out the advice - full marks for number 3!!
Today’s reading material- just out in the UK. Looking forward to exploring @carlzimmer.com new book on the history of airborne microbes and infection
June 8, 2025 at 4:37 PM
Today’s reading material- just out in the UK. Looking forward to exploring @carlzimmer.com new book on the history of airborne microbes and infection
Day out at the BBC in Salford to record for R4 Sliced Bread. But you’ll have to wait until the summer to find out what it is about!
May 30, 2025 at 2:39 PM
Day out at the BBC in Salford to record for R4 Sliced Bread. But you’ll have to wait until the summer to find out what it is about!
Something tells me that their algorithm needs a bit of tweaking. I’m sure it’s a great role, but it’s not quite where I was planning next in my career…
May 16, 2025 at 1:15 PM
Something tells me that their algorithm needs a bit of tweaking. I’m sure it’s a great role, but it’s not quite where I was planning next in my career…
Today we seem to have a plague of giant wasps eating all my garden furniture 🤬
April 30, 2025 at 4:06 PM
Today we seem to have a plague of giant wasps eating all my garden furniture 🤬
15 years ago my husband dug a hole in our back garden. Today it is finally a pond - and the cat is v happy!
April 26, 2025 at 6:34 PM
15 years ago my husband dug a hole in our back garden. Today it is finally a pond - and the cat is v happy!
Another shrinkflation special, this time from Cadbury’s. If you put “value pack” in big letters maybe your customers won’t notice that it’s the same size tin but with 50g less power?
April 19, 2025 at 8:39 AM
Another shrinkflation special, this time from Cadbury’s. If you put “value pack” in big letters maybe your customers won’t notice that it’s the same size tin but with 50g less power?
A random cluster of tulips at the side of a country lane
April 15, 2025 at 6:17 PM
A random cluster of tulips at the side of a country lane
Dammit, that wasn’t in this weeks game plan
April 14, 2025 at 7:04 AM
Dammit, that wasn’t in this weeks game plan
Snap! Mine is a blue point - is yours seal?
March 10, 2025 at 9:56 PM
Snap! Mine is a blue point - is yours seal?
Good luck with the traffic. Here’s a hungry cat!
February 26, 2025 at 9:59 PM
Good luck with the traffic. Here’s a hungry cat!
Checking out some seriously cool fluid dynamics today on the Isle of Wight hovercraft
February 15, 2025 at 5:20 PM
Checking out some seriously cool fluid dynamics today on the Isle of Wight hovercraft
This wasn’t in last nights plan. I guess we’re tracking down a new washer this morning so we can have water in our house again…
February 8, 2025 at 9:35 AM
This wasn’t in last nights plan. I guess we’re tracking down a new washer this morning so we can have water in our house again…
The picture also has a photo of Simon with a giant Cornish pasty!
February 8, 2025 at 1:57 AM
The picture also has a photo of Simon with a giant Cornish pasty!
Spotted in a toilet today. I get picture two, but picture three? Does anyone really straddle a toilet like this? One for you @beonthetoilet.bsky.social!
February 7, 2025 at 3:31 PM
Spotted in a toilet today. I get picture two, but picture three? Does anyone really straddle a toilet like this? One for you @beonthetoilet.bsky.social!
I am in a scientific talk, honest. Turns out that making fudge is a great example to use in a @braggroyceleeds.bsky.social presentation. Very entertaining talk from Wilson Poon from Edinburgh Uni.
January 21, 2025 at 3:12 PM
I am in a scientific talk, honest. Turns out that making fudge is a great example to use in a @braggroyceleeds.bsky.social presentation. Very entertaining talk from Wilson Poon from Edinburgh Uni.
I’ve just realised that if I look in my fish tank at the right angle I can watch it spit tiny droplets out from the bubbles created by the aerator. It’s quite mesmerising. I suspect there’s some smaller aerosols I can’t see too #FluidDynamics
January 20, 2025 at 8:25 PM
I’ve just realised that if I look in my fish tank at the right angle I can watch it spit tiny droplets out from the bubbles created by the aerator. It’s quite mesmerising. I suspect there’s some smaller aerosols I can’t see too #FluidDynamics