Brexit, for once some facts.

[Zlatan]

the indication I trust is the number of patients currently in hospital for covid treatment.
(Currently 9,538) that number is highest since March, so not peaked, the opposite.
Total hospitalisations so far: > 576,000 patients treated.

Official UK Coronavirus Dashboard

GOV.UK Coronavirus dashboard

coronavirus.data.gov.uk

Hospitalizations peak after infections... The Worldometer is showing infections have peaked..
But who knows..
Don't trust the Zoe stuff either. Know a few who send info to site... Its based on symptoms isn't it???

From Worldometer. Reduction each day for past seven or so???

 

[oyster]

Hospitalizations peak after infections... The Worldometer is showing infections have peaked..
But who knows..
Don't trust the Zoe stuff either. Know a few who send info to site... Its based on symptoms isn't it???

If you contribute to Zoe, they will likely ask you to take a test if you have any symptoms. They use the information from those tests to inform their view of today and for forward-looking estimates.

They keep feeding back the information, endeavouring to assess infections as accurately as they can.

 

[Zlatan]

If you contribute to Zoe, they will likely ask you to take a test if you have any symptoms. They use the information from those tests to inform their view of today and for forward-looking estimates.

They keep feeding back the information, endeavouring to assess infections as accurately as they can.

Not convinced.

 

[oyster]

Not convinced.

I wasn't trying to convince you. Just letting you know what they do.

 

[Zlatan]

I wasn't trying to convince you. Just letting you know what they do.

I know, should have explained better. I, m not convinced their figures are reliable.

 

[Woosh]

Not sure I agree with that. It tends to be step changes with new technology. Piston engined planes were slowly getting faster, Typhoon Tempest about its pinnacle but then massive leaps with Jet engines.
Space travel needs next revolution... Next step.. Burning tons of fuel to expel mass out the back is no different to technology in Chinese rockets hundreds of years ago..
And, as you say, progress at moment is incremental and almost insignificant. We need something else.
The hypersonic propulsion systems are simply developments of same theories.

rockets currently work on Newton's third law of motion and we know the limitation of that.
Spaceships won't work like that in the future. Firstly, it can't land on earth and take off again. It will have electric propulsion, based on our deeper understanding of particle physics. Just think of the progress we made when going from steam engines to electric motors.
After the big bang, the universe went through an expansion phase lasting about 370,000 years. However, in the first 20 minutes, particles with mass and photons were still attached together, faster than light velocity happened.

Chronology of the universe - Wikipedia

en.wikipedia.org

 

[Zlatan]

rockets currently work on Newton's third law of motion and we know the limitation of that.
Spaceships won't work like that in the future. Firstly, it can't land on earth and take off again. It will have electric propulsion, based on our deeper understanding of particle physics. Just think of the progress we made when going from steam engines to electric motors.
After the big bang, the universe went through an expansion phase lasting about 370,000 years. However, in the first 20 minutes, particles with mass and photons were still attached together, faster than light velocity happened.

Chronology of the universe - Wikipedia

en.wikipedia.org

I thought even electric propulsion systems used material "thrown out" the back (or heated to a plasma and expansion of gases utilised)??
And, I, m not sure electric rocket propulsion is that new... Talk years ago about laser fired at solar panels on board a "rocket" that then used electricity generated to propel vehicle??
Are there propulsion systems not utilising Newton's laws??

 

[oldgroaner]

Tombstone of the Day

Surely there is enough space for them to engrave "Here lies the Body of" plus "and" below?

 

[Woosh]

I thought even electric propulsion systems used material "thrown out" the back (or heated to a plasma and expansion of gases utilised)??
And, I, m not sure electric rocket propulsion is that new... Talk years ago about laser fired at solar panels on board a "rocket" that then used electricity generated to propel vehicle??
Are there propulsion systems not utilising Newton's laws??

electric propulsion uses electromagnetic force, no material in the normal sense is ejected. You create a field that interacts with a similar field outside the spaceship, like your solenoid creates a magnetic field that interacts with the magnetic field of a permanent magnet. For example you create a magnetic field that pushes against the magnetic field of the sun to propel your spaceship.
Now you create an anti-Higgs field to reduce the mass of your spaceship to zero, you can reach speed of light in seconds without much trouble.

 

[Danidl]

Not sure I agree with that. It tends to be step changes with new technology. Piston engined planes were slowly getting faster, Typhoon Tempest about its pinnacle but then massive leaps with Jet engines.
Space travel needs next revolution... Next step.. Burning tons of fuel to expel mass out the back is no different to technology in Chinese rockets hundreds of years ago..
And, as you say, progress at moment is incremental and almost insignificant. We need something else.
The hypersonic propulsion systems are simply developments of same theories.

I don't see that there is any alternative to ejection of material out the rear in order to move the opposite direction . Of course the choice of material and the velocity at which it is expelled can be changed , but the equations of motion don't really change . Even the change from propellor to jet thrust did not change that . The point about the energy is that any chemical bonds .. including the hydrogen oxygen combustion engines are only about 20eV per molecule, more typically 3 to 4eV . With nuclear power that goes up to about a Mev

 

[Woosh]

I don't see that there is any alternative to ejection of material out the rear in order to move the opposite direction .

our crafts slingshot around planets and moons, a bit like sail boats use wind before they have electric motors. Higgs VEV (vacuum expectation value) can conceivably be mediated (see Yukawa couplings).

 

[flecc]

you create a magnetic field that pushes against the magnetic field of the sun to propel your spaceship.
Now you create an anti-Higgs field to reduce the mass of your spaceship to zero, you can reach speed of light in seconds without much trouble.

"Just like that", as Tommy Cooper used to say!
.

 

[GLJoe]

I don't trust the daily number of new cases. Government manipulates the PCR test cycle threshold number,

quote:
"During times of low prevalence (like at the moment*) a CT of <25 is positive
During times of high prevalence then <28 is positive."

I don't think its just a case of 'manipulating' the figures! From the information I've previously heard, unless I'm misunderstanding something, that quote from a FOI request would appear to be a blatant lie!
Cycle thresholds of 25 or 28 ?? I've never seen them mentioned that low for UK testing. Those might actually be fairly sensible numbers!

As it is - here for example is a government petition where it states "The current NHS cycle threshold for public health recording of a positive C-19 PCR test result is 40..."
https://petition.parliament.uk/petitions/560963

then you have NHS documents floating around -
"Publications approval reference: 001559
Guidance and standard operating procedure
COVID-19 virus testing in NHS laboratories"
which give 45 as the cycle threshold

I can't recall the exact figure, but at 45 cycles, you can get a HUGE false positive rate (so much so as to make the test and thus statistics, totally and utterly worthless - unless that is your goal is simply to show an artificially high infection rate)

Not sure if people here are aware, but if you want to see blatant manipulation of figures, a month or more ago in the States, the CDC changed the rules on testing hospital admissions, so that if you are un-vaccinated, they test you at a CT value of 45 (an almost certain positive Covid result)
But if you've been vaccinated - the CT value used is 28. (So a large percentage of 'breakthrough' cases aren't going to show up)
WOW. I mean WOW. How blatantly corrupt can you get?

 

[Woosh]

WOW. I mean WOW. How blatantly corrupt can you get?

that's just the way this government works.

 

[Woosh]

"Just like that", as Tommy Cooper used to say!
.

Magnetic field propulsion is an accepted idea:

Field propulsion - Wikipedia

en.wikipedia.org

For lightspeed travel, I've lifted the idea from a couple of Netflix productions. Higgs field manipulation from 'Dark', tunnelling through cosmic string from 'Another life'.

 

[flecc]

Magnetic field propulsion is an accepted idea:

Field propulsion - Wikipedia

en.wikipedia.org

For lightspeed travel, I've lifted the idea from a couple of Netflix productions. Higgs field manipulation from 'Dark', tunnelling through cosmic string from 'Another life'.

Shooting yourself in the foot?

Quotes:

This article has multiple issues.

Field propulsion is the concept of spacecraft propulsion where no propellant is necessary but instead momentum of the spacecraft is changed by an interaction of the spacecraft with external force fields, such as gravitational and magnetic fields from stars and planets. It is purely speculative and has not yet been demonstrated to be of practical use, or theoretically valid.

A bit like London's 137 bus route.
.

 

[Woosh]

A bit like London's 137 bus route.

what's the story about London's 137 bus route?

Shooting yourself in the foot?

about that, one key step is to generate a very substantial plasma stream in space which can't be done until we can make small fusion reactors.

 

[Zlatan]

that's just the way this government works.

Think Joe was quoting about United "States"?? ..

 

[Woosh]

Think Joe was quoting about United "States"?? ..

no, he was talking about the NHS, FOI requests and our parliament.
The CDC story is a side story.
His point is the number of false positives.
My point is the numbers can't be trusted if you move the CT to suit the government.
The number of Covid deaths can't also be trusted for similar reasons.
whereas the number of people hospitalised don't suffer from the same kind of manipulations.

 

[Zlatan]

Shooting yourself in the foot?

Quotes:

This article has multiple issues.

Field propulsion is the concept of spacecraft propulsion where no propellant is necessary but instead momentum of the spacecraft is changed by an interaction of the spacecraft with external force fields, such as gravitational and magnetic fields from stars and planets. It is purely speculative and has not yet been demonstrated to be of practical use, or theoretically valid.

A bit like London's 137 bus route.
.

The electric propulsion system I read about did have advantages to fuel type, in that the stuff ejected out the rear was coming out loads loads faster and as such could be lots lighter to give thrust... But cant supply anything like that required to defeat gravity.. They, d be deployed after all that hydrogen was wasted and atmosphere clogged with C02...
Solar winds was another flight of fancy, utilising acres of sails to provide drive and harness solar... All sounds a bit science fiction than fact to me.