* Posts by IvyKing

229 publicly visible posts • joined 3 Jul 2009

Page:

Uncle Sam, 15 US states launch antitrust war on Apple

IvyKing

The equivalent of what MS did with windows would have been for Apple to say to the various telcos that if you want the discount price on iPhones, you can only sell iPhones to your customer. Since iMessage makes use of Apple's servers, I don't see a problem with Apple to require use of Apple hardware to use the full functionality of iMessage. The "monopoly" with iMessage is pretty much a US thing.

Where Apple does face anti-trust issues is requiring that web browsers on iOS use Webkit along with requiring apps running on iOS to be purchased through the Apple Store.

As for "makes it tough to dump iOS for rivals", isn't that pretty much how MS operates with their Office suite?

IvyKing

Not quite the same thing. Apple's market share in smartphones is no where near Microsoft's market share in personal computer OS's. By excluding Chrome from the iPhones and iPads, Apple may be doing us a favor in preventing Google using its monopoly power from making Chrome the only option for web browsing.

What strange beauty is this? Microsoft commits to two more non-subscription Office editions

IvyKing

Re: First hit is always free-ish.

That's where I think MS went astray when transitioning from Word for DOS to Word for Windows. Word for DOS had a rather decent approach to style sheets and MS went to the effort of creating a book about how to create and use style sheets. As long as one was consistent with naming and using styles, changing font size and typeface would be attaching a style sheet with the appropriate font size and typeface.

The "downside" of style sheets is that one needed to have an existing style sheet prior to writing the document and one also needed to use the style sheet as the only method for formatting the document.

TrueNAS CORE 13 is the end of the FreeBSD version

IvyKing

Reminds of an old Slashdot Troll

BSD is dying, Netcraft confirms it. OTOH, MacOS has a primarily BSD userland, which certainly helps MacPorts and Homebrew maintain a large selection of open source software for the Mac.

I also feel a bit of nostalgia about the one of the original distributors of BSD phasing out BSD. One selling point for BSD was pointing out that the Walnut Creek server could keep a 100Mbps link saturated while running on a 386. Another reason for feeling nostalgic is that I probably passed most of the original BSD developers at on time or another in my years at Cal. To top it off, I just read that the last of the original BART cars will be making their final run next month.

FCC ups broadband benchmark speeds, says rural areas still underserved

IvyKing

Re: I'll wait for it

Have you ever been in eastern Montana? Or any very rural area in the western US? While not as sparsely populated as the Australian Outback, there can be quite a bit of distance between customers, so it often doesn't make economic sense to string fiber on speculation. The rollout of fiber optic service in my city was base in part on how many people in a neighborhood were willing to put down a very nominal sum to pre-order service. Keep in mind the city I live in probably has as many people as the State of Montana wast of Billings.

As far as the reimbursement, I've known people who had to pay to have utility lines extended to their homes, but did get a partial reimbursement every time a new home was built in their area.

IvyKing

Re: Still the same Bravo-Sierra game

FWIW, my fiber connection goes direct to the local equivalent of the central office. The "CO" presumably has a much higher speed connection to the internet as a whole.The internet connection for my first ISP was a T1 line - theoretically it would only need 30 56K dial-up connections to saturate that T1 connecting the ISP to the internet backbone.

IvyKing

Re: Teaser text error

Gigabit was first available two years ago in my city of 50,000 in a county of >3,000,000 and that was for a small portion of the city. The rollout is still in progress. OTOH, most of the city has had 200+Mbps cable modem service for several years now, though uplink speeds were 10Mbps for cable versus 940Mbps for Gigabit fiber.

IvyKing

Re: I'll wait for it

I had an interesting chat with a fellow who works for a telecon company in eastern Montana. He said that they could run fiber up to 40 miles from the equivalent of a central office. This beats the hell out of DSL which is limited to about 5km (line length requiring loading coils). The one downside is that the customer would have to kick in the cost of placing the line, but is likely to get reimbursed if mmore customers sign up for the service provisioned by that line.

UK minister tells telcos to share telegraph poles if they can't lay cable underground

IvyKing

The experience in the US

The public utilities commissions in the US have generally required the original owners of the pole line share space on the poles, so it's common to see poles with power, telephone, cable and occasionally fiber optics. There are long standing regulations about how the tenant users of the pole line compensate the original owner along with rules on where the tenant lines need to be placed. One reason the PC's have an authority to do so, is that pole lines are usually on easements on property owned by others (e.g. homeowners). Most fiber optic installations in the US are going to areas where the utilities are underground, so many companies are using micro-trenching to cut a trench about 10cm wide and 30cm deep in the road, which is usually asphalt, to place the conduits to the fiber. This does involve another small box in the utility box clusters associated with underground utilities.

Historically, underground power lines were 3 to 5 times more expensive than overhead power lines, but experience fewer service disruptions than overhead. Fixing an underground line is quite a bit more involved than an overhead line.

Trying out Microsoft's pre-release OS/2 2.0

IvyKing

Re: Versions of MS-DOS did support more than 32MB partitions

And to top it off, MS updates of Windows included code that prevented Windows from running on top of DR-DOS. FWIW, I had experience with DR-DOS at work and was impressed - also impressed at how the arrogant DR of CP/M days morphed into a more costumer friendly company, while MS outshone DR on how to be arrogant bastards (no relation to the Stone Brewery product).

Another memory from the mid-90's was chatting with our company marketing officer and his comment that just about everybody who did business with MS felt like they got shafted. Sublogic and Lattice are a couple of examples from the 1980's.

IvyKing

Re: Very Different

One of the ironies of the 80286 based OS/2 v1.x was that it was a very good platform for software development. The descriptor table entries for a segment included allocated memory size and the processor would throw a fault if a read or write was attempted outside the allocated memory. I seem to remember reading that a number of MS developers were using OS/2 for the initial stages of Windows software because of that. In some ways it was kind of a shame that the 80386 version of OS/2 went to a flat memory module as the 80286 way of doing things was potentially more secure - remember that 80386 segments had 32 bits of addressing space.

One other what-if was BeOS - with reports that it was much better handling multimedia than the contemporary versions of Windows while running on the same hardware. Apparently several PC makers wanted to provide BeOS as an optional OS, but MS had made it very difficult for manufacturers to load anything but Windows on the machines being sold.

Don't get me started on the "Internet Explorer" trademark.

IvyKing

Versions of MS-DOS did support more than 32MB partitions

Compaq DOS 3.31 had no trouble supporting a 76MB partition. I can't help but wonder if MS took away Compaq's right to make their own version of DOS after Compaq broke the 32MB barrier before MS did. Joe Boykin of the SCP Users Group was working on supporting a 100MB hard drive on MS-DOS back in the DOS 2.0 days - don't think it required any changes in the API as the 86-DOS API used 32 bits to store the file size. OTOH, the 12 bit FAT had to be changed.

What really changed the whole PC industry was the rise of the cloned IBM BIOS, with one of the most popular written by veterans of Technical Design Labs.

IvyKing

Re: Very Different

Glad to see you differentiate the 8088 from the 8086, which was a 16 bit processor. From my feeble benchmark tests, code ran about 3X faster on an 8MHz 8086 than the 4.77MHz 8088. The ease of porting 8080/Z-80 CP/M programs to DOS was due to Intel making the 8086 source code compatible with the 8080 (which was an upgrade to the 8008) and Tim Paterson writing DOS to support CP/M OS calls.

Stuck paying for your apartment's crummy internet? FCC boss Rosenworcel wants to help

IvyKing

Re: Maybe not as easy as it seems

I'm very aware that "if" was doing some VERY heaving lifting, though I suspect many recently built apartments are set up properly.

IvyKing

Re: Maybe not as easy as it seems [Bulk-Billing Alternatives]

In my little section of the US, current options are: a so-so DSL connection from AT&T (formerly SBC, formerly PacBell); Cable Modem with at least 240Mbps down not sure if upload speed is greater than 10Mbps; fiber from Ting 930M down, 940M up; possibly mm-wave service from Verizon with about 300M down. Electric power and gas are from an "Investor owned utility" though the city offers to "sell power" A.K.A. the generation portion of the bill. Garbage is a commercial entity operating under a franchise, water and sewage are government districts that date back before the city was incorporated in 1986.

Needless to say, I'm using the Ting option - it boggles my mind that the data throughput is higher than the ECS transfer rate on a CDC 6000 series machine (10M 60 bit words per second). I have talked to people who have 10G or higher fiber optic connections in the area around UCSD.

IvyKing

Re: Maybe not as easy as it seems

If the apartment cabling was set up right, having multiple provider choices would not be that difficult. That's assuming that each apartment has its ow Ethernet (or fiber optic) cable to the appropriate utility closet. where it would a matter of moving one end of a patch cord. Chances are that for most apartments, arranging for choice in providers will be a royal PITA. I wouldn't be surprised to see the rule having opt-outs where it would be too expensive to upgrade the wiring.

I do know someone who works for a company that specializes in utility billing for apartments and condos, would be interesting to see what their take is on the matter.

Tiny Core Linux 15 stuffs modern computing in a nutshell

IvyKing

Re: You can never be too thin

The last version of HP-UX for the 68040 would run in 8MB, though it would probably be swapping like crazy. This included the GUI and some applications, though I think 16MB would make it considerably less painful.

While I've had a fair amount of experience running QNX v4 and v6, I don't recall trying out the demo floppy. QNX was generally easy to use and it was a bit of a hoot that Vedit was the standard editor for version 4 - having previously using it in the mid 1980's on an SCP 8086 machine.

Starting over: Rebooting the OS stack for fun and profit

IvyKing

Re: Hit-and-Miss [CDC Big Iron]

I know CLDR was part of SCOPE or at least CalidoSCOPE (Cal Improved Design Of SCOPE), but the KRONOS machine had been gone three months when I started the Assembly Language class. I do remember warning of making sure the "IDENT" card followed immediately after an END statement card, otherwise SCOPE would get confused. On a related note, a while back I downloaded the COMPASS code for SNOBOL. I still like the way setting registers A1 - A5 triggered a read to the corresponding X register and A6 and A7 triggered a write from the corresponding X registers, along with A0 and X0 being used for ECS reads and writes. On a 6600, the ECS could transfer a 60 bit word every 100 nsec, though my fiber internet connection does 940Mbps up and 930Mbps down.

It was impressive watching the 6400 handle dozens of TTY connections, two card readers with one being a CDC 405, four line printers and at least a couple of tape drives. The CC had an Extended Core Storage cabinet that was originally shared between the SCOPE machine and the Kronos machine. Ten years later, the CC was running networked VAX's running an updated version of the OS the CS department wrote for the PDP-11, though they had to kludge a terminal driver system that would handle the variety of terminals that had been used with the 6400 as well as an SDS machine.

I remember the CDC La Jolla facility having a CDC 3200 in 1971 (along with a bunch of CDC1700s), and the Smithsonian Museum near Dulles has a 3800. The 3000 series machines were basically the CDC 1604 implemented with silicon planar transistors as opposed to the original germanium junction transistors, though the 3200 was to the 3600 as the 6200 was to the 6600.

IvyKing

Re: Hit-and-Miss

Yeah, the PPU's on the CDC 6000/7000 series machines were quite a neat design. Having the control portion of the OS reside on a PPU greatly enhanced security as there was no way that user code could overwrite the OS. Another advantage of the Fortran model was the lack of a heap. I did do some assembly language programming for subroutines to be called from "RUN" Fortran, used CLDR instead of LGO as part of the job card and I still have my copy of Ralph Grisham's "Assembly Language Programming for the Control Data 6000 series" book. The CDC 6000 ISA is one of the cleanest that I've come across.

During my first quarter at the big U, the comp center had two 6400's, with one running SCOPE as modified by the CS department and the other running KRONOS. The real big users of computer power could submit jobs to the 7600 on the hill or a collection of 7600's about 45 miles away run by the only guy Seymour Cray paid attention to. Unfortunately the 6400 running Kronos was sold, but the CS department was given a PDP11 to play with. They started off running three different OS's on it, two from DEC and one from some outfit in New Jersey - after their hacking of SCOPE they decided it might be fun to try their luck with the code from NJ.

As for NVM, the one class that I got an A+ in was taught by some guy named Leon Chua...

IvyKing

Re: Hit-and-Miss

I'm glad I'm not the only one who remembers magnetic core storage. I've even been exposed to a machine that used a drum for main memory, archive storage was either punched cards or mag tape. Not old enough to have experienced the original DRAM - which was implemented in a special CRT.

On a slightly different topic, the OS intended for the first RISC machine, the CDC-6600 was called Sipros Ascent which was supposed to make it easy to embed assembly code into Fortran (the CDC 6000 and 7000 series machines were designed for Fortan). Development was overdue and over budget, so a bootleg OS called SCOPE was used instead and became the most common. The 6000 and 7000 series did have an interesting set of memory hierarchy, starting with the 8 general purpose 60 bit registers, standard core, extended core, disk, tape/cards.

Hold up world, HP's all-in-one print subscription's about to land, and don't forget AI PCs

IvyKing

Re: Sweating assets

My 1973 HP45 is still working, though the batteries died decades ago. Single digit LaserJets also had the reputation of lasting forever.

I bought a HP tank printer for the wife, part of the paper feed crapped out on the original unit, being under warranty HP shipped a new printer. The wife has printed out thousands of pages, and so far I've oly spent $19 for a refill of black ink.

Drowning in code: The ever-growing problem of ever-growing codebases

IvyKing

Re: Remember 'The Last One'?

I remember seeing it demonstrated at a computer show/fair. Main take away was that it took a long time to generate and compile the code.

Then again, I remember attending the First West Coast Computer Faire, which was a mind blowing experience.

Trident missile test a damp squib after rocket goes 'plop,' fails to ignite

IvyKing

Re: What the hell?

In a typical steam locomotive boiler explosion, the boiler shell usually ends a good distance away from the engine - engine being the cylinders, rods, wheels and frame. Locomotive boiler explosions are almost always caused by low/no water on the crown sheet over the firebox.

Microsoft embraces its inner penguin as sudo sneaks into Windows 11

IvyKing
Flame

What's with sudo being a Linux innovation??

According to the sudo website, sudo was originally implemented on a BSD 4.1 installation in 1980. That means M$ is embracing its inner Oskie Bear (Cal mascot) or inner Daemon or maybe inner Holy Hubert.

Affordable, self-healing power grids are closer than you think

IvyKing

Re: Well, duh.. Time for DC?

FWIW, Anderson specifically makes plugs/sockets for DC circuits. They have on line for the ~380VDC used in modern data centers, with the plugs designed to shield the arc caused by pulling the plug out of the socket.

Back in the 1920 to 1950 time frame, there were a large number of houses in the US where the electric power was 32VDC from battery banks. The batteries where kept charged by small gasoline generators or windmill driven generators. There were a number of appliances made that would run off of 32VDC and the plugs and outlets were usually the same used for 110VAC.

IvyKing

Re: I beg to differ

Heavy emphasis on "some". Periods of low precipitation can last for several years, causing a shortage of water needed for hydro. An early example was California ca 1920, where a large fraction of the electricity was generated by hydro, running into problems from a dry year curtailing production. One response was building more steam plants.

Note that nuclear and geothermal can also have problems with inland generating stations running low on cooling water in a dry year.

IvyKing

Re: Well, duh.. Time for DC?

Residential utility providers are not necessarily opposed to loops, some AC distribution systems were literally a grid with multiple paths from the substation to the final customer. Main reason for not wanting loops is to make setting up protective relays easier (in power system lingo, the relay is what detects the fault and the circuit breaker is the switch controlled by the relay that breaks the circuit). Transmission grids have many redundant loops, but the relays have an easy time differentiating between a local fault and a non-local fault.

You are spot on about "Universal" motors. Funny thing is that it's easy to make a power supply that will be just as happy to run off of 120VDC or 240VDC as it is to run off of 120VAC or 240VAC.

Currently available SiC FET's make transforming from 2400VDC to 120/240VDC a piece of cake, with efficiency better than 98%. 7200VDC to 120/240VDC is a bit more complicated - may need to wait for SiC IGBT's.

IvyKing

Re: I beg to differ

The continental US (plus a good part of Canada) is composed of three grids: The eastern being everything but Texas more than 100 to 300 miles east of the Rocky Mountains, the western system being everything but Texas west of the boundary and Texas. California is part of the western grid also containing all of Washington, Oregon, Idaho, Utah, Arizona and New Mexico along with most of Montana, Wyoming, and Colorado plus British Columbia and possible parts of Alberta.

I'm dubious about the interconnected micro-grid proposal working as there isn't much being said about dealing with the vagaries of renewable power. The only two sources of high availability "zero" carbon power are nuclear and geothermal.

GPS interference now a major flight safety concern for airline industry

IvyKing

Re: Is it naive to suggest ...

The highest frequencies that can be refracted (not reflected) by the ionosphere is a bit north of 200MHz when there is heavy ionization in the E-layer. This known as sporadic E-skip and appears to be caused very large thunderstorms sending charge up to the ionosphere (sprites, jets, etc). The worst that happens at 1+ GHz is that the ionosphere causes the velocity of propagation to slow down a bit and shifting apparent location.

Using a directional antenna to verify that the signal supposedly coming from a particular satellite really is coming from that satellite should be able to detect spoofing and may be able to null out the interfering signal.

The Land Before Linux: Let's talk about the Unix desktops

IvyKing

Re: Proprietary

To make things even more interesting, Tim Paterson was planning to develop a multi-user version of 86-DOS.

The rise and fall of the standard user interface

IvyKing

Re: Thanks for the Microsoft Word for DOS

One neat trick for Word for DOS was putting different default stylesheets in different different directories, so one could have differing formatting for different recipients. The other nice thing was that it was very easy to attach a different stylesheet provided that one was consistent in setting up the style sheets.

The "escape" fr triggering menus was very easy to work, as it rarely required a two key (e.g. ctrl-C) combination. Certainly much faster than having to use a mouse.

IvyKing

Re: Motif?

Motif was an HP creation and the basis for Visual User Environment from which CDE was largely derived from. Unlike Window$, there was an effort for coherent design in the UI as described in the book about the visual design of Motif. One thing I miss is the emphasis on using as little of the display's area for the windows. As for the supposed complexity of using VUE or CDE with a three button mouse, my then 2.5 year old daughter had no problem in figuring out how to click on an icon to bring up a picture just after saying "daddy's 'puter".

The other thing I miss about VUE/CDE was that the default application for opening a file was a text editor - files with registered magic numbers or extensions would be opened up by the appropriate application.

IvyKing

Re: Yes, but

Supercalc? Lotus 1-2-3? Not to mention Viscalc. All pale in comparison with the mighty Multiplan!

Yes, I did have my tongue in cheek when typing the above.

Microsoft hires energy mavericks in quest for nuclear-powered datacenters

IvyKing

300MWe or 300MWth?

I'm assuming that the 300MW power figure was for the reactor thermal output, meaning that the turbine-generator set connected to the reactor would put out ~100MW electrical.

IvyKing

Re: I finally wish them well

FWIW, the NRC wants hardwired control systems for reactors, so no software involved.

Users now keep cellphones for 40+ months and it's hurting the secondhand market

IvyKing

Re: iPhone 7+ here

I finally replaced my iPhone 6 the middle of last year when the battery finally gave out. Got a new SE because I wanted the Touch ID instead of the Face ID. Going from 16GB to 128GB was a nice improvement.

For a moment there, Lotus Notes appeared to do everything a company needed

IvyKing

Lotus Manuscript

In the early days of my former company, Manuscript was yje primary word processor used for any serious documentation. One co-worker even used it asa programming editor with the outline handling very useful for the different modules of the Forth based environment he was using. What impresses me in retrospect is that Manuscript could handle 100+ page documents and run on a PC-XT.

The 'nothing-happened' Y2K bug – how the IT industry worked overtime to save world's computers

IvyKing

Re: 9/9/99 bug too

That would be 9/13/99 in m/d/y format or 13/9/99 in d/m/y format as the date of interest for Space 1999 as October 16, 1997 is for Lost in Space.

California's DMV had a foretaste of the Y2K bug when a 103 year old woman had her driver's license rejected because the DMV software just looked at the last two years of her birth date. IIRC, this occurred about 1970.

The Hobbes OS/2 Archive logs off permanently in April

IvyKing

"Those CDs maybe 30 years old"???

I've got some CDs bought in spring 1985 that play as well as new.

Code archaeologist digs up oldest known ancestor of MS-DOS

IvyKing

Re: Shift left, people.

Compared to the 8-bit CP/M systems available at the time, segmented addressing and 12-bit FAT's were a distinct improvement. Segmented addressing was less painful than bank switching and the FAT file system provided file size in bytes, thus eliminating the need for a ^Z to denote the end of a text file. Compared to a 32 bit address space and a more advanced disk format (e.g. various flavors of UNIX file systems), segmented addressing and 12 bit FAT's are a pain.

RIP: Software design pioneer and Pascal creator Niklaus Wirth

IvyKing
Flame

Re: USCD Berkeley?

Except that UCSD (UC San Diego) is emphatically not UCB (UC Berkeley or UC Bezerkeley), which is often referred to as "Cal". Don't get me started on the "Cali" BS.

N.B. I am a Cal grad, though know UCD, UCI, UCLA, UCSB, UCSC, and UCSD grads, not sure about UCSF or UCM.

Apple pops blue bubbles of Beeper Mini's iMessage service again

IvyKing

Re: Apple is in its rights to block Beeper

My comment about bundling wasn't so much thinking Apple was going to get hot for bundling, as thinking that filing suit against Apple for "bundling" iMessage had a much better chance in court than Beeper's threats. The word "bundling" was in reference to IBM getting dinged in the late 60's and early 70's for bundling software with their mainframes. I am not sure if any company would have a standing to file suit over iMessage, and especially not Beeper.

Consumer's who don't use iMessage might have a standing with the argument that they are being forced to pay for a service that they don't use.

Anyway, I don't think Apple is being malicious with their treatment of Beeper trying to hack into iMessage.

IvyKing

Apple is in its rights to block Beeper

The iMessage service relies on Apple owned servers, which were paid for by the sales of Apple hardware. If Apple was blocking the installation of third party messaging software such as Whatsup, that would constitute uncompetitive behavior on Apple's part, whereas Apple blocking Beeper is more of keeping Beeper from freeloading off of Apple's customers.

OTOH, what could be construed as uncompetitive behavior is Apple bundling iMessage with iOS, as opposed to offering as a paid service such as Apple TV.

CLIs are simply wizard at character building. Let’s not keep them to ourselves

IvyKing

Re: GUIs were and are intended to demystify the computer

Back when I was a freshman at Cal, the UI consisted of the white "CDC 6400" punch card with the account number and job name punched in followed a couple of job cards (lgo, cldr, etc), followed the program data cards and finally the reddish 6789 card. Editing was punching a new to card to replace an old card. A couple of years later, I was hearing about something from Bell Labs provoking comments like "If Bell Labs hadn't invented the transistor the Phone Company would still be using vauum tubes" and their programming language being an abomination in the eyes of the Lord".

What's the golden age of online services? Well, now doesn't suck

IvyKing

Re: 100256.1230@compuserve.com signing in…

My first experience being online was also Compuserve in December 1990. I really liked the ASCII interface as access wasn't limited to PC's and Macs. The moderated forums were nice, had a great time meeting members of the ADD forum IRL and generally good experiences on other forums. IMHO, things started going downhill when the computing base was switched over from the DEC-10 clones to NT boxes with the resulting ending of the ASCII interface.

Blue Origin pulls sheets off cargo lunar lander prototype

IvyKing

"Workshop of the telescopes", "Astronomy", "Come and take me away" also come to mind.

Given the delays in the Blue Origin launch vehicle, perhaps "Deadline" may be most appropriate.

Tweaked Space Shuttle Main Engine gets ready for final testing

IvyKing

The RL-10 engine is still in production, with first items made in 1962-63.

The RS-25 was noted for having a high Isp, don't think a new engine would be significantly better. IIRC, the plans for new engines are to use 3-D printing of some of the critical parts to reduce cost of manufacture.

USENET, the OG social network, rises again like a text-only phoenix

IvyKing

Re: sudo apt install slrn

I remember when Rob Dickens showed up on alt.music.enya - maybe half of the folks replying thought he was an impostor. Other usenet memories included correcting Henry Spencer, an interchange with George M. Scithers (one time editor of Isaac Asimov's Science Fiction Magazine) and perusing through alt.destroy.microsoft.

LibreOffice 7.6 arrives: Open source stalwart is showing its maturity

IvyKing

Re: Outline View?

Back in the 1990's, Lotus Manuscript was the go to choice for long documents in the company that I was working for. It was impressive how fast it could switch between outline view and normal view when running on a 4.77MHz 8088 PC. One co-worker used Manuscript for editing Assyst, a FORTH based laboratory software package. The company had a bit of a scare when notified of an upcoming software audit, scrambling to buy the remaining copies of Manuscript still sitting on store shelves.

On a different tack, having been exposed to Island Write, Draw and Paint, I find the insertion of graphics to be a royal pain in MS-Word and similar word processing software. In IWD&P, the first task is to create a container for the graphic, and then plopping the graphic into the container with options for proportional or non proportional scaling as opposed to treating the graphic like some funny paragraph style.

China succeeds where Elon Musk has failed with first methalox rocket

IvyKing
Flame

Interesting but not earth shattering

LH2 is a much trickier fuel to handle than LNG and LH2 has been in use since the early Centaur and Saturn I days (RL10 engines were in production 1961-62). Main advantage of Methalox is that it much cheaper than LH2, and the increased density has advantages for first stage use.

Environmental impacts should be less than RP1-LOX, much less than UDMH-IRFNA and not even in the same ballpark as AP-Al. Heck, ClF3 was being considered as an oxidizer, but had the problem in being hypergolic with just about everything.

Page: