43S News

General discussion about calculators, Swiss Micros or otherwise
toml_12953
Posts: 577
Joined: Wed May 03, 2017 5:46 pm
Location: Malone, NY USA

Re: 43S News

Post by toml_12953 » Sat Jan 25, 2020 1:27 pm

DA74254 wrote:
Sat Jan 25, 2020 7:50 am
But yes, I agree with you, fusion woul'd be much much more favourable than fission. Since the last fusion tests I read about lasted about 8 seconds, I think there is still many years into the future before we will obtain a stable and reliable fusion technology.
Well, that's some progress anyway! I remember seeing a demonstration of fusion in the General Electric pavilion at the '64-'65 Worlds Fair in Flushing, NY. We walked down a big spiral ramp and in the center, at the bottom was a big machine with a clear domed top. The fusion lasted much less than one second and there were a lot of flashes in this device. The guide explained that the fusion had occurred already and the flashes were automated cameras taking pictures of the chamber.
Tom L

:geek:

DM10L SN: 059/100
DM41X SN: 00023 (Beta)
DM42 SN: 00025 (Beta)
SN: 00221 (Shipping)

User avatar
Walter
Posts: 1241
Joined: Tue May 02, 2017 9:13 am
Location: Close to FRA, Germany

Re: 43S News

Post by Walter » Sat Jan 25, 2020 4:04 pm

toml_12953 wrote:
Sat Jan 25, 2020 1:27 pm
I remember seeing a demonstration of fusion in the General Electric pavilion at the '64-'65 Worlds Fair in Flushing, NY. We walked down a big spiral ramp and in the center, at the bottom was a big machine with a clear domed top. The fusion lasted much less than one second and there were a lot of flashes in this device. The guide explained that the fusion had occurred already and the flashes were automated cameras taking pictures of the chamber.
Hmmh. In 1964, mankind knew about the fusion bomb for sure but I seriously doubt any company was able to "demonstrate" a controlled fusion reaction big enough for any camera to picture. Certainly, however, it was a nice demonstration suiting the spirit of that time and obviously impressive enough for you to remember after more than 50 years. And the guide was either very well trained or didn't know better ... (presumably the latter since nobody is as convincing as the ignorant).
DM42 SN: 00041 --- Follower of Platon.

HP-35, HP-45, ..., HP-50, WP 34S, WP 31S, DM16L

toml_12953
Posts: 577
Joined: Wed May 03, 2017 5:46 pm
Location: Malone, NY USA

Re: 43S News

Post by toml_12953 » Sat Jan 25, 2020 5:55 pm

Walter wrote:
Sat Jan 25, 2020 4:04 pm
toml_12953 wrote:
Sat Jan 25, 2020 1:27 pm
I remember seeing a demonstration of fusion in the General Electric pavilion at the '64-'65 Worlds Fair in Flushing, NY. We walked down a big spiral ramp and in the center, at the bottom was a big machine with a clear domed top. The fusion lasted much less than one second and there were a lot of flashes in this device. The guide explained that the fusion had occurred already and the flashes were automated cameras taking pictures of the chamber.
Hmmh. In 1964, mankind knew about the fusion bomb for sure but I seriously doubt any company was able to "demonstrate" a controlled fusion reaction big enough for any camera to picture. Certainly, however, it was a nice demonstration suiting the spirit of that time and obviously impressive enough for you to remember after more than 50 years. And the guide was either very well trained or didn't know better ... (presumably the latter since nobody is as convincing as the ignorant).
It was very impressive. The cameras weren't taking pictures of the reaction, just the chamber after the fusion. GE didn't want a failure with all those onlookers! Actually, the most impressive thing for me was James Bond's Aston Martin DB5 that was on display at a monorail terminal. Also, we saw Kolonel (sic) Keds fly over the Unisphere wearing a Bell Rocketbelt. 10 year olds are easily impressed! Here's an article about it with an artist's conception of the device and the ramp.

https://www.iter.org/newsline/-/1897
Tom L

:geek:

DM10L SN: 059/100
DM41X SN: 00023 (Beta)
DM42 SN: 00025 (Beta)
SN: 00221 (Shipping)

User avatar
Walter
Posts: 1241
Joined: Tue May 02, 2017 9:13 am
Location: Close to FRA, Germany

Re: 43S News

Post by Walter » Sat Jan 25, 2020 6:41 pm

The chamber after the "fusion" looked like before, didn't it? Impressive! :mrgreen: Worth a set of flashes ;) Btw that's one important difference to the bomb... maybe even the crucial one... 8-)

Addendum: when we did our measurements for my master's degree end of the Seventies, we achieved some thousand fusions per second - fusions of oxygen with lead ;) - no big deal, we did expect this rate. At the bottom line it depends which nuclei you fuse (you've to invest energy for fusing oxygen and lead while you gain energy when you fuse hydrogen and hydrogen, for instance). BEWARE: This is a very rudimentary sketch of this topic only!
DM42 SN: 00041 --- Follower of Platon.

HP-35, HP-45, ..., HP-50, WP 34S, WP 31S, DM16L

toml_12953
Posts: 577
Joined: Wed May 03, 2017 5:46 pm
Location: Malone, NY USA

Re: 43S News

Post by toml_12953 » Sat Jan 25, 2020 9:50 pm

toml_12953 wrote:
Sat Jan 25, 2020 5:55 pm

It was very impressive. The cameras weren't taking pictures of the reaction, just the chamber after the fusion. GE didn't want a failure with all those onlookers! Actually, the most impressive thing for me was James Bond's Aston Martin DB5 that was on display at a monorail terminal. Also, we saw Kolonel (sic) Keds fly over the Unisphere wearing a Bell Rocketbelt. 10 year olds are easily impressed! Here's an article about it with an artist's conception of the device and the ramp.

https://www.iter.org/newsline/-/1897
Here's a website that has an actual photo of the device.

https://www.westland.net/ny64fair/map-d ... ectric.htm
Tom L

:geek:

DM10L SN: 059/100
DM41X SN: 00023 (Beta)
DM42 SN: 00025 (Beta)
SN: 00221 (Shipping)

User avatar
Walter
Posts: 1241
Joined: Tue May 02, 2017 9:13 am
Location: Close to FRA, Germany

Re: 43S News

Post by Walter » Sat Jan 25, 2020 10:00 pm

toml_12953 wrote:
Sat Jan 25, 2020 9:50 pm
Here's a website that has an actual photo of the device.

https://www.westland.net/ny64fair/map-d ... ectric.htm
Thanks for sharing this link, nice read.
Inside the pavilion was the first demonstration of controlled thermonuclear fusion to be witnessed by a large general audience. A magnetic field squeezed a plasma of deuterium gas for a few millionths of a second at a temperature of 20 million degrees Fahrenheit. There was a vivid flash and a loud report as atoms collided, creating free energy (evidenced on nearby instruments).
(Emphasis added by me.)
:lol: Oh yes! Impressive! And certainly good marketing ... 8-)
DM42 SN: 00041 --- Follower of Platon.

HP-35, HP-45, ..., HP-50, WP 34S, WP 31S, DM16L

User avatar
Walter
Posts: 1241
Joined: Tue May 02, 2017 9:13 am
Location: Close to FRA, Germany

Re: 43S News

Post by Walter » Tue Jan 28, 2020 7:25 am

There are speculations in another thread about the fate of [d/c] formerly present g-shifted on the top left key: no, it didn't go into a menu. Instead [a b/c] will work as a toggle switching from decimal to proper fractions first, then turning to improper fractions, then proper fractions, and so on. Just for sake of clarity.
DM42 SN: 00041 --- Follower of Platon.

HP-35, HP-45, ..., HP-50, WP 34S, WP 31S, DM16L

User avatar
Jaymos
Posts: 430
Joined: Sun Nov 04, 2018 6:03 pm
Location: Cape Town

Re: 43S News

Post by Jaymos » Tue Jan 28, 2020 7:54 am

Walter wrote:
Tue Jan 28, 2020 7:25 am
There are speculations in another thread about the fate of [d/c] formerly present g-shifted on the top left key: no, it didn't go into a menu. Instead [a b/c] will work as a toggle switching from decimal to proper fractions first, then turning to improper fractions, then proper fractions, and so on. Just for sake of clarity.
Great. That makes sense. I like that. I saw in the code that it was a binary, eligible for a toggle instead of two labels.
Jaco Mostert
Elec Eng, South Africa
WP34C, HP42S, DM42 for complex math; 35S, 28C, 32Sii, WP34S, EL-506P, EL-W506, PB700; owned FX702P & 11C; used 67 & 85. iOS: 42s (Byron), Free42, WP31S/34S, HCalc.
43S operators right. DM42 sn. 03818.

User avatar
Walter
Posts: 1241
Joined: Tue May 02, 2017 9:13 am
Location: Close to FRA, Germany

Re: 43S News

Post by Walter » Tue Jan 28, 2020 4:37 pm

For those of you who are interested in: the updated draft manuals have been uploaded a few minutes ago.

As usual, comments, remarks, critics, pointers to errors and typos, questions, etc. are welcome and will be answered asap.
DM42 SN: 00041 --- Follower of Platon.

HP-35, HP-45, ..., HP-50, WP 34S, WP 31S, DM16L

rprosperi
Posts: 633
Joined: Mon Apr 24, 2017 5:48 pm
Location: New York

Re: 43S News

Post by rprosperi » Wed Jan 29, 2020 12:44 am

Walter wrote:
Tue Jan 28, 2020 4:37 pm
For those of you who are interested in: the updated draft manuals have been uploaded a few minutes ago.
Walter - The latest manuals I see in gitlab are version 0_14, though update time of "8 hours ago" confirm they are fresh. Isn't the version number typically incremented each release?
--bob p

DM42: β00071 & 00282, DM41X: β00071, DM10L: 071/100

Post Reply