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swatkaton But what about blockchain apps?

I am seeing this:

Surge protection

Warning:You triggered the wiki's surge protection by doing too many requests in a short time.Please make a short break reading the stuff you already got.When you restart doing requests AFTER that, slow down or you might get locked out for a longer time!

Google cache: https://webcache.googleusercontent.com/search?q=cache:qGQvzK...

swatkaton He created a Wikipedia article per day for a year, including on his wedding day

What makes you think Telugu is a rarely-spoken language?

swatkaton Qantas wants to fly from Sydney to New York or London nonstop

Current longest non-stop commercial flight, Air India DEL to SFO, has been very popular and often operate at 85% capacity 6 times a week[0][1]. Air India is adding DEL to LAX non-stop next month. It's especially popular with elderly travellers, as there's no hassle of transit.

[0] http://timesofindia.indiatimes.com/business/india-business/A...

[1] http://onemileatatime.boardingarea.com/2016/10/18/air-india-...

swatkaton The Next Moon Landing Is Near, Thanks to Pioneering Engineers

I have great hopes on Team Indus. Hoping they'll pull of this mission. They've signed a PSLV-XL launch contract with ISRO, and they seem to be on track with spacecraft and rover development[0]. Japan's X-prize entrant HAKUTO will also be ride-sharing on this mission[1].

It'll be an exciting 2018 for us, we have two moon rover missions from India - Chandrayaan 2 from ISRO[2], and Team Indus.

[0] https://medium.com/teamindus/teamindus-missionlog-august-67e...

[1] https://www.theverge.com/2016/12/20/14023336/google-lunar-x-...

[2] https://en.wikipedia.org/wiki/Chandrayaan-2

swatkaton U.R. Rao has died

Prof. UR Rao was instrumental in developing space applications, launch vehicle technology, cryogenic engine project, space science missions of Indian space program. He was also instrumental in setting up ISRO's commercial arm Antrix Corporation[0], which provides space application and launch services worldwide and generate revenue for ISRO. Most recently, he was laying out plans for ISRO's Venus mission. Now, payload selection is going on for Venus mission[1]. Before coming back to India, Rao was one of the prime experimenters of NASA's Mariner 2, Pioneer 6/7/8/9, and Explorer 34/41 missions. Godspeed, and rest in peace.

These are some interesting interviews of Prof. UR Rao:

https://www.youtube.com/watch?v=fiJ1yRrNRO8

https://www.youtube.com/watch?v=k6aZXl-eLEQ

ISRO's tribute to Prof UR Rao: http://www.isro.gov.in/update/28-jul-2017/tribute-to-prof-u-...

[0] http://www.antrix.gov.in/

[1] http://www.firstpost.com/tech/news-analysis/isro-mission-to-...

swatkaton Base-4 fractions in Telugu

Malayalam diverged from Tamil. But, Kannada is not a derivative of tamil.

swatkaton Isro’s new GSLV Mk III rocket places GSAT-19 communication satellite in orbit

GSAT-19 satellite also has electrical propulsion system[1] along with the regular hypergolic motors. ISRO is validating their Hall effect electrical propulsion systems for north-south station keeping[2]. Going forward, electrical propulsion systems will greatly reduce the amount of fuel that need to be carried in satellite.

[1] http://economictimes.indiatimes.com/news/science/india-to-av...

[2] https://forum.nasaspaceflight.com/index.php?topic=33770.0

swatkaton Isro’s new GSLV Mk III rocket places GSAT-19 communication satellite in orbit

Onboard camera videos: https://www.youtube.com/watch?v=m6S8iBtIJDY

swatkaton Isro’s new GSLV Mk III rocket places GSAT-19 communication satellite in orbit

Yes. GSLV Mk III first stage is made up of two S200 solid boosters, with 200 ton propellant in each. S200 is the third largest solid boosters in the world (after Shuttle SRB, and P230 of Ariane-5).

swatkaton Isro’s new GSLV Mk III rocket places GSAT-19 communication satellite in orbit

This is an important milestone for ISRO. This launch successfully validated ISRO's homegrown CE-20[1] gas generator cycle cryogenic engine. With this, ISRO has mastered both staged combustion (CE-7.5[2]) and gas generator cycle cryogenic engine technologies.

Next up is SCE-200 RP-LOX engine[3]! There is a plan to swap GSLV Mk III's L110 hyperglic stage with SCE-200 stage, which should considerably boost payload capacity.

[1]https://en.wikipedia.org/wiki/CE-20

[2]https://en.wikipedia.org/wiki/CE-7.5

[3]https://en.wikipedia.org/wiki/SCE-200

swatkaton Isro’s new GSLV Mk III rocket places GSAT-19 communication satellite in orbit

GSLV Mk III is a brand new launch vehicle. Usually, ISRO starts with conservative payload numbers for all their launch vehicles, and keep improving them iteratively. We have seen this happening with PSLV and GSLV Mk II as well. We can expect ISRO to bump up GSLV Mk III payload capacity in subsequent launches.

swatkaton ISRO's new launch vehicle GSLV Mark III successful orbital flight

Mission page: http://www.isro.gov.in/launcher/gslv-mk-iii-d1-gsat-19-missi...

Launcher: http://www.isro.gov.in/launchers/gslv-mk-iii

Launch video: https://www.youtube.com/watch?v=ae6LVG0j1Pg

swatkaton Windows Internals, 7th Edition

Based on this[1] tweet, "System Aggregator Module" firmware on Surface Pro is similar to Macbook's "System Management Controller"[2].

[1] https://twitter.com/aionescu/status/815878947200077824?lang=...

[2] https://en.wikipedia.org/wiki/System_Management_Controller

swatkaton Does it scale? Who cares (2011)

SMSGupShup, now known as GupShup.

http://techcircle.vccircle.com/2013/02/06/mobile-group-messa...

swatkaton Most Electronics Being Banned on Certain US-Bound Flights

May be there's a loophole in x-ray machines that scan cabin bags, but not in the machines that scan checked-in bags?

(just guessing, if at all "it was driven by intelligence of a possible attack")

swatkaton Show HN: Gitly.io – high performance Git service with a 10s installation time

Relavent username :)

swatkaton ISRO PSLV-C37 onboard camera showing 104 satellite separation

In this launch, there were "3U", "2U" and "1U" sized CubeSats[1]. 1U CubeSat is a 10x10x10 cm3 cube[2], "2U" is 20x10x10 cuboid and "3U" is 30x10x10 cuboid.

[1] https://news.ycombinator.com/item?id=13650114

[2] https://en.wikipedia.org/wiki/CubeSat

swatkaton ISRO PSLV-C37 onboard camera showing 104 satellite separation

Another slightly better quality video: https://www.youtube.com/watch?v=cvJYSmplzXc

swatkaton PSLV-C37 Successfully Launches 104 Satellites in a Single Flight

One of the challenges is to pack all those satellites in launch vehicle's payload adapter. The payload adapter on launch vehicle needs to be flexible enough to allow such varying number of payloads. In this mission, ISRO had to realize a new/modified payload adapter to carry those 104 satellites.

Next is to accurately inject all those satellites - either into their respective orbits if it's a multi-orbit mission, or with sufficient time gap and re-orientation between injections if it's a single-orbit mission.

This was a single orbit mission (all sats released into SSO). So, PSLV's 4th stage had to time those 104 satellite injections. It also need to re-orient itself for each injection depending on satellite's requirement. This mission had as many as 103 "separation events". All this logic is pre-programmed and executed by launch vehicle's onboard computer.

Check out QuadPacks lined up before the launch: http://blog.isilaunch.com/the-quadpack-line-up/

And, check out those QuadPacks mounted on PSLV payload adapter around primary payload: https://imgur.com/a/LM9Cp

swatkaton PSLV-C37 Successfully Launches 104 Satellites in a Single Flight

104 satellites were deployed in this mission:

a) Cartosat 2 Series - primary payload.

b) 88xDove (88x3U CubeSats) - 22 QuadPack deployers.

c) 8xLEMUR (8x3U CubeSats) - 2 QuadPack deployers.

d) BGUSat (3U CubeSat), PEASSS (3U CubeSat), DIDO-2 (3U CubeSat), Al-Farabi-1 (2U CubeSat), and Nayif-1 (1U CubeSat) - 1 QuadPack deployer.

e) INS-1A and INS-1B are not in CubeSat format. So, they need to be mounted separately on payload adapter.

So, 1 primary payload + 25 QuadPack deployers + 2 nano-sats in total.

Pics of Quadpacks at: https://spaceflightnow.com/2017/02/14/indian-rocket-set-to-p...

swatkaton India has banned disposable plastic in Delhi

Exactly. Plastic has been banned (and not being used) in various cities in India. A lot of popular tourist places (Hampi, Ooty comes to mind) have 'no plastic bags' policy.

swatkaton ISRO to launch record 104 satellites on Feb 15

I am interested to know how all those payload are mounted on PSLV's payload adapter. Cartosat 2 Series is the primary payload, and remaining 103 satellites are co-passengers.

Usually, PSLV mission brochures used to depict how payloads are mounted on its payload adapter. However, it isn't shown this time.

a) Cartosat 2 Series - primary payload.

b) 88xDove (88x3U CubeSats) - 22 QuadPack[1] deployers.

c) 8xLEMUR (8x3U CubeSats) - 2 QuadPack deployers.

d) BGUSat (3U CubeSat), PEASSS (3U CubeSat), DIDO-2 (3U CubeSat), Al-Farabi-1 (2U CubeSat), and Nayif-1 (1U CubeSat) - 1 QuadPack deployer.

e) INS-1A and INS-1B are not in CubeSat format. So, they need to be mounted separately on payload adapter.

So, we have a primary payload + 25 QuadPack deployers + 2 nano-sats. Hopefully we'll get some info during mission live broadcast on how these payloads are mounted on PSLV.

[1] http://digitalcommons.usu.edu/cgi/viewcontent.cgi?filename=0...

swatkaton ISRO to launch record 104 satellites on Feb 15

Payloads:

Cartosat-2 Series

INS-1A

INS-1B

88xDove

8xLEMUR

BGUSat

Al-Farabi-1

PEASS

DIDO-2

Nayif-1

Mission page: http://www.isro.gov.in/launcher/pslv-c37-cartosat-2-series-s...

Brochure: http://www.isro.gov.in/pslv-c37-cartosat-2-series-satellite/...

swatkaton Uber Hires Veteran NASA Engineer to Develop Flying Cars

There's also Moller Skycar[1], a vaporware that has been in the works since last 30 years.

[1] http://moller.com/moller_skycar400.html

swatkaton Planet to Acquire Terra Bella from Google

From this[1] TechCrunch article:

>>> We’ve not heard a firm price. Aside from the $300 million figure we heard, another described Terra Bella as essentially being “donated” to Planet.

[1] https://techcrunch.com/2017/01/25/google-satellite-planet/

swatkaton XNOR.ai frees AI from the prison of the supercomputer

Uncanny Vision[1] have similar computer vision and deep learning libraries for ARM chipsets.

http://www.uncannyvision.com/

swatkaton Galileo satellites experiencing multiple clock failures

From the article:

Most of the maser failures (5) have occurred on the satellites that were originally sent into orbit to validate the system, whereas all three rubidium stoppages are on the spacecraft that were subsequently launched to fill out the network.

Rubidium clock failures are being seen in "operational" Galileo satellites. First operational Galileo was launched in 2011.

And, first operational Indian navigational satellite was launched in 2013. So, there's not much difference in the timeline or aging of Rubidium atomic clocks between ESA and ISRO satellites.

Anyway, ISRO will be switching to indigenous atomic clocks for next generation navigation satellites[1].

[1] http://www.thehindu.com/news/national/tamil-nadu/india-devel...

swatkaton The spy with no name

>>>> Not to mention placing tapping devices in the Queen's furniture.

They didn't actually placed tapping devices in the Queen's furniture. From the article:

One of his first ideas was to try planting listening devices in the Queen's furniture, he recalls, though he and his bosses realised it was technically unrealistic.

swatkaton Wi-Fi TimeSync

Specs are not out yet? I couldn't find any on wi-fi.org.

swatkaton Rust at OneSignal

From https://onesignal.com/about:

It's free; how does OneSignal make money?

We make money by using the data we aggregate to improve web and mobile experiences. We also offer custom solutions to enterprise clients.