What are you doing during quarantine?

[hagopbul]

watched zombieland double tap

wondering the number of SARS-Cov-2 numbers is 500000 is that the actual number or the tip of the ice berg ?

wondering should i watch other movie like v for vendetta or star wars , how to watch star trek ? i can't register in the channel

 

[kyphysics]

I watched Contagion and was absolutely blown away by how eerily parallel the plot was to what we're experiencing right now.

 

[DennisN]

I just read an article in The Guardian (written by the Italian novelist Francesca Melandri) which I thought would fit this thread perfectly. I think it was very well written and thoughtful, and the message probably fits many people in many countries around the world at the moment:

A letter to the UK from Italy: this is what we know about your future (The Guardian, March 27, 2020)

The acclaimed Italian novelist Francesca Melandri, who has been under lockdown in Rome for almost three weeks due to the Covid-19 outbreak, has written a letter to fellow Europeans “from your future”, laying out the range of emotions people are likely to go through over the coming weeks.

You’ll laugh. You’ll laugh a lot. You’ll flaunt a gallows humour you never had before.

I can personally definitely identify with that.

 

[hagopbul]

I just read an article in The Guardian (written by the Italian novelist Francesca Melandri) which I thought would fit this thread perfectly. I think it was very well written and thoughtful, and the message probably fits many people in many countries around the world at the moment:

A letter to the UK from Italy: this is what we know about your future (The Guardian, March 27, 2020)

The acclaimed Italian novelist Francesca Melandri, who has been under lockdown in Rome for almost three weeks due to the Covid-19 outbreak, has written a letter to fellow Europeans “from your future”, laying out the range of emotions people are likely to go through over the coming weeks.I can personally definitely identify with that.

yes the word won't be the same but we can make it a better place

 

[kyphysics]

Does anyone have a gym membership? If so, have you:

a.) been going
b.) been able to cancel (without getting excuses for why you cannot)?

 

[Klystron]

Does anyone have a gym membership? If so, have you:

a.) been going
b.) been able to cancel (without getting excuses for why you cannot)?

I am a 'life long' member of a health club that stays open 24/7 with branches throughout the US. I am only charged a small yearly membership fee that allows me unlimited access to all clubs and gyms.

a) No. Our state governor has closed non-essential businesses for health quarantine. All gyms, health clubs and swimming pools are closed including mine. Closure also includes private pools and gyms at condominiums pursuant to county as well as state health directives.

b) Yes, but I choose to renew my yearly membership with payment due in April. These things pass.

The benefits from my small investment so outweighs the cost, I am willing to renew anticipating future access. The larger (super-sport) clubs where I live are very nice, indeed; equal to very expensive private clubs I have visited in the past. The large facilities where I swim and workout are scrupulously clean and well maintained with alcohol wipes and fresh towels available before this crisis.

 

[Keith_McClary]

After a decade of needing to clean my house, but not having the time, I discover that is not the reason.

 

[russ_watters]

Does anyone have a gym membership? If so, have you:

a.) been going
b.) been able to cancel (without getting excuses for why you cannot)?

I belong to a gym that is shut down due to the virus. I haven't canceled my membership: the company (LA Fitness) suspended it (will not take payment) for the duration of the shutdown.

 

[vela]

A cautionary tale for the members here:

https://www.theguardian.com/austral...ing-coronavirus-device?CMP=Share_iOSApp_Other

 

[berkeman]

Looks like he should stick to astrophysics...

 

[anorlunda]

How about this one from The Drudge Report?

Man in Coronavirus quarantine runs into street naked before biting woman to death

 

[Irishdoug]

Started going working through Mary L. Boas' book. That and going for a daily run!

 

[Keith_McClary]

Looks like he should stick to astrophysics...

he said. “Working remotely is not that bad. We are also renovating our house, so I am building shelves, making furniture and doing some tiling.”

 

[Swamp Thing]

... astrophysicist-gets-magnets-stuck-up-nose

Looks like he should stick to astrophysics...

He, of all people, should have known the perils of letting things get trapped in black holes.

 

[DennisN]

... astrophysicist-gets-magnets-stuck-up-nose

He had been wanting a telescope for a long time, but all he got was an endoscope.

 

[hagopbul]

thinking about the open source project , how to make some thing in this time to add for that project , came up with wifi idea but it is outside my field totally , for that it may be out side my reach , now ventilators is suddenly the new hype

what was the website of this open source ventilator project

 

[vela]

Here's where all the toilet paper is going...

 

[George Jones]

It is sunny, and I would love to sit on my back deck or in backyard and read, but ... I took this picture this afternoon. Our backyard tire-swing is still buried by snow that is on-the-level!

 

[berkeman]

Yikes! Cross-country skiing time?

 

[George Jones]

Yikes! Cross-country skiing time?

My daughter and I do like to go cross-country skiing occasionally, and there is a first-class facility (national-level)

https://www.caledonianordic.com/

about 11 kilometes (7 miles) from our house. This facility is open, and the trails are still being groomed, but, because of the virus, the rental shop is closed, and we don't do it enough to own our own gear.

 

[Mondayman]

Weather is much more favorable down here in the Thompson-Nicola Valley!

 

[Dr. Courtney]

My sons (both physics majors) are home now, completing the rest of their semester online. It's a closer look than I've had before at their daily classwork and routines. Interesting stuff. One son is working as a tutor through his college which has moved their tutoring services online, enabling him to continue working. The other son continues his computational research remotely with his research adviser.

The research project continues in the basement, most recently creating underwater blast waves (ballistic waves really) by shooting a bb gun from Walmart into a 300 gallon stock tank.

We are maintaining household "quiet times" from 5 AM to noon and from 1 PM to 5 PM so everyone can get their work done. After dinner, my wife and I usually practice for a series of music videos. She's hoping to release a set before Passover. Since one of my sons is also a musician, it turns into more of a "jam session" some nights moving in a much different direction from my wife's music videos. Never really been a lead guitarist, but managed on solo recently for one of my wife's favorite songs. She thought it came out "too country" so I'm listening to more rock and trying to get back to my rock and roll roots while practicing the next one. My son's guitar is more suited for rock, so I'm borrowing his, since he's at home.

Fishing a bit too. Nothing quite like social distancing on the lake. Managing a few to bring home for dinner. Mountain biking almost every day also, but maintaining distance from others is easier on the roads than on the local trails, so I've found a road path with enough elevation changes to be interesting. Was planning to visit a nearby wildlife area today, but an unexpected family need popped up and needs attention.

 

[hagopbul]

thinking of ph distribution in the atmosphere and could that be related to the pneumonia ?

 

[david2]

watching food channels on youtube

 

[DennisN]

During quarantine it is important to continue with the protective measures:

 

[hagopbul]

The research project continues in the basement

can you use pressure valve to release an air pressure into the water ? would that simulate a ballistic wave?

 

[Auto-Didact]

Another end of the day story: an older woman with pulmonary disease calls 5 minutes before closing, coughing, horribly short of breath, feverish, afraid and alone. I'm somewhat concerned but try to calm her a bit and start treating at a distance; I specifically call a trusted pharmacy to deliver the meds right away to her, then leave to go on a planned emergency visit; that visit went pretty well.

When I get back 30 minutes later, I hear that the order was changed between the pharmacies back to the other less reliable pharmacy, that as I predicted they are afraid to go because of the risk, and also that no one has been able to get her on the phone anymore since about a minute after I spoke to her... my heart sank in my chest. In my mind there are only two options: either she's suffocating right now and needs a surgical airway - in which case an ambulance won't make it in time - or she's already gone.

No time to search for a blade, I grabbed a sturdy pen and stormed out the door prepared for the worse; if she had been suffocating since I had spoken to her, then it was already too late. A few minutes later I arrive at the door, ring the bell, I wait... wait... wait...

Spoiler

and she answers through the telecom! Turns out she left her phone off the hook after speaking with me and immediately went to sit in her hallway, waiting upon the delivery of her meds. She had been sitting there since

 

[berkeman]

No time to search for a blade, I grabbed a sturdy pen and stormed out the door

You were going to write her a new Rx?

 

[Auto-Didact]

You were going to write her a new Rx?

... let's just say I have given someone a new airway before in suboptimal conditions

 

[berkeman]

... let's just say I have given someone a new airway before in suboptimal conditions

Probably they were choking, or in anaphylaxis. Not ARDS...

Anyway, I can lose my medical license if I try something like that. But that's a decision each of us has to make in disaster situations. Be well.

https://www.lung.org/lung-health-diseases/lung-disease-lookup/ards

 

[Auto-Didact]

Probably they were choking, or in anaphylaxis. Not ARDS...

Anyway, I can lose my medical license if I try something like that. But that's a decision each of us has to make in disaster situations. Be well.

Yeah, on the ICU and in the operating room for other reasons, definitely not ARDS. Of course, I wasn't sure what was the cause of suffocation and in a split second decision, it was the only treatment modality where something could still be done, so a necessary precaution to take which occurred automatically; if it was ARDS, it would be obvious upon observation and I'd still call it in after pulling something out of the utility belt bag.

Looking at the news, I suppose you're at a far bigger risk than me out there, so hope you at least have enough supplies to work with without putting yourself in dangers way. In either case thanks, and you take care as well.

 

[member 656954]

My lock down is not nearly as stressful as yours, @Auto-Didact, thank goodness, but I'm sure COVID-19 is adding a whole new dimension of anxiety to your days

I'm merely work from home which is okay, I've been geared up for that since 1998, and finishing my second novel which is now in final proof. After that, there's another novel to get back into, and some shows on Netflix I've been meaning to catch. After that...well, I just hope, after that, this lock down ended well because going outside without being concerned you're going to catch a dangerous contagion will be bliss.

 

[Dr. Courtney]

can you use pressure valve to release an air pressure into the water ? would that simulate a ballistic wave?

A sudden release of air in a pipe can simulate a air blast wave. Lots of shock tubes work on this principal, but it requires some length of pipe for the wave front to steepen into a shock wave. We tried this in water several months ago in a number of configurations. We could not get it to work. I'm sure a release of air at a high enough rate could simulate a blast wave in water, but one key is getting the shape of the overpressure wave to resemble a real blast wave in water rather than just the steep shock front followed by a noisy, poor wave shape. These experiments with pressure releases of air in water more-or-less led us to the current approach of firing spheres into water, which are working much better in terms of both wave shape and ease of use.

 

[hagopbul]

trying to read more , and wondering do you all in quarantine ? or it is over on other parts of the glob , hope all are you safe
thinking of applying to some competition on designing a ventilation system but couldn't find any engineer who like to do some thing like that

 

[Swamp Thing]

A sudden release of air in a pipe can simulate a air blast wave. Lots of shock tubes work on this principal, but it requires some length of pipe for the wave front to steepen into a shock wave. We tried this in water several months ago in a number of configurations. We could not get it to work. I'm sure a release of air at a high enough rate could simulate a blast wave in water, but one key is getting the shape of the overpressure wave to resemble a real blast wave in water rather than just the steep shock front followed by a noisy, poor wave shape. These experiments with pressure releases of air in water more-or-less led us to the current approach of firing spheres into water, which are working much better in terms of both wave shape and ease of use.

Apart from the quality of the original waveform in air, maybe it's got something to do with impedance matching between air and water. A mismatch would result in most of the energy being reflected back from the air-water interface.

Intuitively, it seems that a shock tube with its diameter tapering down, would bring the impedance up to that of a pressure wave in water and result in better energy transfer. Something like a trumpet in reverse.

The challenge would be to optimize the interface impedance and group delay at the same time.

 

[nsaspook]

 

[Swamp Thing]

... The other son continues his computational research remotely with his research adviser.

The research project continues in the basement, most recently creating underwater blast waves (ballistic waves really) by shooting a bb gun from Walmart into a 300 gallon stock tank.
...

View attachment 259775

If it's ok to share the goal of the research, I'm sure many of us would be interested to know a bit more. I presume that some kind of nonlinear effects are being studied? I ask this because if they are only interested in propagation effects in the linear regime, then they could have used some kind of transducer to launch a pulse and then measure it at the other end.

 

[Dr. Courtney]

If it's ok to share the goal of the research, I'm sure many of us would be interested to know a bit more. I presume that some kind of nonlinear effects are being studied? I ask this because if they are only interested in propagation effects in the linear regime, then they could have used some kind of transducer to launch a pulse and then measure it at the other end.

You mean like a lithotriptor?

The goal of most underwater blast wave research is to understand the response of some material or organism to a blast wave of given magnitude and pulse duration.

For example, explosives are often used for underwater oil well removals and other things. An important question is what level of blast wave is injurious to various kinds of marine life. If one can simulate an underwater blast wave in the lab that has the representative magnitude and pulse duration, then one can more easily conduct experiments to quantify injury thresholds. The shock waves produced by lithotriptors are on the short side (a couple microseconds) and very small in spatial extent.

The door may also be open to testing the effectiveness of barriers for underwater blast waves. For example, a bubble curtain has been proposed as a possible protective barrier to protect marine life from underwater explosions. One might also test proposed protective equipment for Navy seals and other divers as well as various proposed wearable sensors.

 

[hagopbul]

The goal of most underwater blast wave research

could you use electric discharge to create a bubble in a very fast processes but i don't know the shape of the electrodes or the specific design of the transformer that you should use there is a lot of other methods that can come in mind but you are at home so it is hard to implement
stay safe

 

[ftr]

I am suppose to write this essay for the FQXI contest, but procrastinating. One more youtube, one more PF thead, oh hell I will watch one more stupid netflix endless series, then one more, what a life.

 

[hagopbul]

procrastinating

the same here but i finish 50 % of on book 2 chapters of another and 28 pages from 70 other
but then run out of energy

 

[DrGreg]

What are you doing today?

Nothing much.​

But you did that yesterday!

Haven't finished yet.​

 

[ftr]

run out of energy

Yes sure, sitting for a long time you can lose muscle. That is why I invent a need to go to the pharmacy which is the only non supermarket entity that is open. But then, I see all the people with masks who look like aliens in a horror movie, that makes me rush back to the safety of my home office.

 

[hagopbul]

you could walk around your house

 

[ftr]

you could walk around your house

Ya, somebody send me a subway map that the stops included the kitchen, the bedroom, the bathroom...etc

 

[hagopbul]

Ya, somebody send me a subway map that the stops included the kitchen, the bedroom, the bathroom...etc

sorry around your block (neighborhood ,area,..,etc)

 

[DennisN]

This made me smile...
Some are funny, some are great and some are both funny and great:

Museum Asks People To Recreate Paintings With Stuff They Can Find at Home, Here Are The Results (Sadanduseless)

One example:

 

[Klystron]

Salvador Dali, the artist whose 'melting' painting depicted in the poster reproduced in the above post, stated he learned to capture realistic detail by painting bread. His early still lives and portraits often include bread and other edibles. Dali painted two versions of The Madonna of Port Lligat. I remember a version with the Child replaced by a loaf of whole grain bread but can not find a reproduction on the Inet.

The version in the link has the ubiquitous sea urchins and some sweet roles. @DennisN 's second photo really captures Dali's intent. Note these photos fail to capture the realism apparent in Dali's paintings when viewed in a museum. When the de Young museum promoted a Surrealism Exhibition, the cafeteria staff baked individual Dali loaves and breads to satisfy visitor's appetites.

 

[rsk]

If you're fed up of your own four walls, this site is great - webcams from around the world - nature reserves, the sea, under the sea, animal sanctuaries, NASA - there are even cute cats if that's what you use the internet for.

I've spent the last two days watching a watering hole in Kenya

https://explore.org/livecams

 

[hagopbul]

a small thing i encounter thinking about Covid-19 is it possible that we are altering the gas concentration in the atmosphere so much that we are creating a welcoming environment (in our lungs) for this kind of viruses

can we desing a ventelator that can suck water from the lung using pulsed pressure difference in the lung that idea came to my after Dr. Courtney basement experiments