Thread: Science

Originally Posted by JDNSW

You're probably thinking of celluloid film rather than projectors. I'm not quite sure how easy it would be to make a projector out of celluloid!

None of the chemicals used for processing film would have been flammable, and even if the film was (probably not), it would be hard to ignite from a cigarette when wet from processing. Paper for prints would burn, but offices using paper mostly survived for a more than a hundred years with a fag hanging out of every mouth.

Flammable chemicals seem to have mostly stopped being used in photographic processing in the third quarter of the nineteenth century.

Yes, I meant celluloid film for projectors. I suspect most paper fires in offices were due to people dropping still lit cigarettes into wastepaper baskets. I have actually seen a waste skip catch fire for a similar reason, and even when the flames were out it continued to smoulder, so we had to fill it with water and then drill a hole in the bottom to let it all drain.

Originally Posted by RANDLOVER

Yes, I meant celluloid film for projectors. I suspect most paper fires in offices were due to people dropping still lit cigarettes into wastepaper baskets. I have actually seen a waste skip catch fire for a similar reason, and even when the flames were out it continued to smoulder, so we had to fill it with water and then drill a hole in the bottom to let it all drain.

Could have been worse I reckon. What if that occurred at the SA Govt Powder Magazine at Dry Creek?

Would have meant a new Housing Estate going in.

Powder magazines at Dry Creek • Photograph • State Library of South Australia

Hi,
Celluloid film. Hmmm, at the risk of sounding old, I have worked with it. But only to try and recover some images from decaying rolls of 35mm movie film. Most of the 400ft rolls were too crumbly to get much off. Even the filmcanisters were fragile with rust.
The legacy of the flamability of celluloid nitrate film lasted long after its demise. The design of projector booths reflected the risk of running movie film through a focussed beam of light from a carbon arc well into the 1960s.
Small bits crammed in to a matchbox and lit from a smouldering cigarette made a marvelous smoke bomb if it didn't burst into flames.
So much mischief that we got away with, so long ago too.
Cheers

Big news perhaps? I added a Science Versus re bad news on beer, wine and more recently- Happily found a bright one for Alcohol

Happy Easter all- If My RAT tests are negative Disco is off to West Coast of Vic soon. ( Two covid + in my room yesterday- DOH)

Media Release – Jet Zero Australia Partners with Qantas, Airbus, LanzaJet, and Queensland Government to launch Australian SAF industry

• March 30, 2023

SUSTAINABLE AVIATION FUEL READIES TO TAKE FLIGHT IN AUSTRALIA
Media Release - Jet Zero Australia Partners with Qantas, Airbus, LanzaJet, and Queensland Government to launch Australian SAF industry - Jet Zero Australia

Originally Posted by NavyDiver

Big news perhaps? I added a Science Versus re bad news on beer, wine and more recently- Happily found a bright one for Alcohol

Happy Easter all- If My RAT tests are negative Disco is off to West Coast of Vic soon. ( Two covid + in my room yesterday- DOH)

Media Release – Jet Zero Australia Partners with Qantas, Airbus, LanzaJet, and Queensland Government to launch Australian SAF industry

• March 30, 2023

SUSTAINABLE AVIATION FUEL READIES TO TAKE FLIGHT IN AUSTRALIA
Media Release - Jet Zero Australia Partners with Qantas, Airbus, LanzaJet, and Queensland Government to launch Australian SAF industry - Jet Zero Australia

Speaking of Science, but a tad OT, I happened upon an elderly bloke yesterday out side our Coffee Shoppe busting his pooper trying to Jemmy Bar an olde tangled Agapanthus bush out. 5 days beard growth, crappy old clothing etc.

Got chatting as you do, he said he works part time doing this stuff & of course I asked what do you do with the rest of your time? "I'm a Scientist". Sez me stupidly "but you don't look like a Scientist" thinking more about white lab coats, Microscopes,Slide rules, Bunsen Burners & white mice in cages & stuff & having a crazy/insane look on their face.


I'm a plant Scientist etc etc etc I cant recall all his other qualifications & probably he was thinking "Hello, I've got a right plonker here".

I guess he could have been a Rocket Scientist (you know "It ain't rocket science" stuff.


You can never tell a book by it's cover right? RIGHT.



OOPS! T i C of course.

Originally Posted by NavyDiver

Big news perhaps? I added a Science Versus re bad news on beer, wine and more recently- Happily found a bright one for Alcohol

Happy Easter all- If My RAT tests are negative Disco is off to West Coast of Vic soon. ( Two covid + in my room yesterday- DOH)

Media Release – Jet Zero Australia Partners with Qantas, Airbus, LanzaJet, and Queensland Government to launch Australian SAF industry

• March 30, 2023

SUSTAINABLE AVIATION FUEL READIES TO TAKE FLIGHT IN AUSTRALIA
Media Release - Jet Zero Australia Partners with Qantas, Airbus, LanzaJet, and Queensland Government to launch Australian SAF industry - Jet Zero Australia

Does VIC. really have a North/South running West coast? More your South Coast I'd reckon, although some inlets do face West.

Just asking for a friend.

Yep, Cape Bridgewater just West of Portland has a North/South West coast - small maybe but it’s there and it’s in the West of the state not far from where ND is heading.

excuse the pun on Alternating Power or AC,

High Voltage Direct Current is not new. Making it work via software is and it is rather interesting Science

deleted wrong link sorry


What it is in a nut shell of cut and paste

"High-voltage DC power lines can transport significantly more power over greater distances than high-voltage AC lines. The two primary reasons for this are: HVDC lines can carry a higher voltage than HVAC lines with the same wire thickness due to the corona discharge and the skin effect. It's also possible to transmit about twice the amount of voltage in an HVDC power system in comparison to a high-voltage AC power system, which explains most of the advantages of overhead HVDC lines compared to overhead HVAC lines.

The ability for HVDC lines to transmit more power over greater distances gives it two main advantages over HVAC:

1. HVAC transmission systems are limited to shorter power lines, meaning that more power towers must be created, which boosts the costs high-voltage AC transmission systems.
2. Not only are there more power towers in HVAC systems, but the power towers are also bulkier and more expensive to construct than power towers in HVDC systems. The support needs to be stronger, wider and taller than HVDC transmission towers in order to accommodate for the heavy mechanical load on AC transmission towers, which makes them more expensive.

"

Benefits of HVDC Transmission Systems | Cence Power

Australia is already using it!

1. Basslink is HVDC
2. Terranora interconnector is a underground HVDC
3. Murraylink

https://electrical-engineering-porta...s-in-australia

Edit Sorry I put the wrong Pod cast link in. the wrong one is to a happy hippy who some times has interesting ideas and often not

This is the correct link

https://open.spotify.com/episode/1J0...TXWOCNtzScMkXA