Search found 5774 matches

by Amber G.
10 Jun 2019 10:33
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

^^^ Thanks. For people who may not know Arindam Ghosh is one of the author and him, and another person (Rekha Mahadevu) are the only one from the team who I know are on twitter.. Most of the people (except recently there are a few posts) have been tight-lipped about it.. Some of the other well-known...
by Amber G.
10 Jun 2019 10:16
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

,,I am curious as to which journal they actually plan to publish their findings in. I was not going to post this before but since I have seen it in other media - they (from what I know/read/heard) is Nature - very respected journal - so if the paper gets published (and IISC is respected place) it w...
by Amber G.
10 Jun 2019 09:43
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

For those who know basic physics (need not be expert) may find this youtube video about IISC team's super-conductivity claim quite interesting and educational. This basically goes though many points I pointed out (eg magnetic succsptlilibity data not done again).. also gives some theoretical basics ...
by Amber G.
08 Jun 2019 22:17
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

^^^ Of course, In my opinion - (and many others agree) other data is not going to impress or remove doubt (as interesting as that may be) [b]WITHOUT the (additional) susceptibility data! .. The one which really needs to be straightened out / explained. It is simply strange that they have reprinted t...
by Amber G.
08 Jun 2019 20:41
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

^^^ There is this article about the recent arXiv preprint (which I mentioned above) IISc team submits more evidence of superconductivity - By Prasad Ravindrana on June 7, 2019 Interestingly, as I mentioned in this forum, it talks about new resistivity data in the new pre-print but Prof Gosh (one of ...
by Amber G.
07 Jun 2019 11:50
Forum: Technology & Economic Forum
Topic: India's Contribution to Science & Technology
Replies: 711
Views: 136647

Re: India's Contribution to Science & Technology

^^^ Posted the arXiv article in the Physics dhaga a few days ago. Waiting for publication in a peer-reviewed journal to comment more but this (IIT) group does not replicate the results claimed by the IISc group.
by Amber G.
07 Jun 2019 10:43
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

Another update in arXiv --. Link: https://arxiv.org/abs/1906.02291 (submitted by Saurav Islam).
by Amber G.
07 Jun 2019 10:42
Forum: Technology & Economic Forum
Topic: India's Contribution to Science & Technology
Replies: 711
Views: 136647

Re: India's Contribution to Science & Technology

^^^ A few of the researchers are on twitter. There is a new update - article in arXiv, (just today) with some more data.. Link: https://arxiv.org/abs/1906.02291 (submitted by Saurav Islam).
by Amber G.
06 Jun 2019 01:49
Forum: Technology & Economic Forum
Topic: India's Contribution to Science & Technology
Replies: 711
Views: 136647

Re: India's Contribution to Science & Technology

Would the Gurus here explain what is being shown. .. FWIW: Some points: The video above is quite odd..not very scientific and sometimes YouTube Videos are just YouTube Videos. The clip refer to an arXiv article (not published). Let us wait till IISc or someone reputable puts something there. Anyway...
by Amber G.
05 Jun 2019 00:59
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

Some interesting development: It seems like that a group at IIT Mandi has been able to replicate results of room temp superconductivity reported first by Pandey group at IISc. The paper is posted on arxiv Link: https://arxiv.org/abs/1906.00708 Peer-reviewed publication still awaited ...I have not ha...
by Amber G.
04 Jun 2019 10:47
Forum: Strategic Issues & International Relations Forum
Topic: India-US relations: News and Discussions IV
Replies: 2270
Views: 319025

Re: India-US relations: News and Discussions IV

^^^ Slightly OT but Pu238 as power source ( long lasting) has been used for moon shots (like Apollo 11), and even in Pace-makers . (Big chunk of Pu238 gets rather hot due to radio-activity but since it is all alpha-rays - which can't penetrate skin - so relatively safe to handle/touch as long as you...
by Amber G.
04 Jun 2019 08:46
Forum: Strategic Issues & International Relations Forum
Topic: India-US relations: News and Discussions IV
Replies: 2270
Views: 319025

Re: India-US relations: News and Discussions IV

This came up while searching for Nanda Devi.. https://rockandice.com/snowball/the-secret-of-nanda-devi/?cn-reloaded=1 "..Elite climbers were trained by the CIA and paid huge sums of money to carry an atomic-powered spy gadget to the top of an undisclosed peak.." Nanda Devi and subsequentl...
by Amber G.
03 Jun 2019 02:25
Forum: Technology & Economic Forum
Topic: India's Contribution to Science & Technology
Replies: 711
Views: 136647

Re: India's Contribution to Science & Technology

Thanks for posting this. I have also posted this in physics dhaga, FYI - The video evidence written above in Hindu was with the authors (Authors told us that they have the video evidence too)... Note#1 - For those who may not be familiar with physics behind this video. <snip> The video shows repuls...
by Amber G.
01 Jun 2019 23:32
Forum: Technology & Economic Forum
Topic: Indian Education System
Replies: 3741
Views: 215929

Re: Indian Education System

^^^ Thanks for posting this.
by Amber G.
01 Jun 2019 04:50
Forum: Technology & Economic Forum
Topic: Indian Education System
Replies: 3741
Views: 215929

Re: Indian Education System

^^^ Thanks for posting .. I see pretty impressive names - those who have created it. As I read, I have pretty positive reaction.
by Amber G.
31 May 2019 21:55
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

]Meanwhile - may be not making as much noise in media but I found interesting/exciting. Just a few items: (From this week) - Really exciting news about Super Conductivity ( at -23° C - which is a huge leap towards room temperature). (The article was published in Nature and then only big news) . ( On...
by Amber G.
29 May 2019 12:09
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

also, I am not exactly sure how the noise means that that the data is fraudulent ? Rahulji - As I mentioned (and other SA article too), it is not the "noise" per se but the noise pattern is same in two different places. This is what got many concerned. (It's like, as I said, noticing two ...
by Amber G.
29 May 2019 11:43
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

Not a physicist but I can't tell the difference or repetation that you claim from that graph. That appears to be baseline. I would assume the upward curve and then plateauing is where the real meat is and that is different. I think it is OK to criticize data but this is borderline claiming fraud. A...
by Amber G.
29 May 2019 06:21
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

Meanwhile there is this conference in the Bay area. for IISc alumni - so may be some interesting lectures and more info. https://conf2019.iiscaana.org/
by Amber G.
29 May 2019 02:40
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

I wanted to post about IISc scientists discovery in this dhaga last August but I restrained myself. I was hoping that whole controversy will be sorted out before the story became a big news item. The authors did not published the paper then (they did not retract it also) and now the news story has b...
by Amber G.
29 May 2019 01:56
Forum: Technology & Economic Forum
Topic: India's Contribution to Science & Technology
Replies: 711
Views: 136647

Re: India's Contribution to Science & Technology

Thanks for posting this. I have also posted this in physics dhaga, https://www.thehindu.com/sci-tech/science/iisc-team-provides-video-evidence-of-superconductivity-at-room-temperature/article27271786.ece?homepage=true The Hindu article about video evidence FYI - The video evidence written above in H...
by Amber G.
29 May 2019 00:45
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

^^^ Rahulji - for me, the disturbing part is fake e-mail and TVR saga (see SA or PR's facebook post).. some one went through lot of trouble to impersonate TVR and send fake emails..whoever did that needs to be investigated by India. **** Meanwhile there is another update - a video giving more "...
by Amber G.
28 May 2019 23:51
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

Here is a story from Scientific American published few months ago ...some may find it interesting, (This essentially documents some of the points I was making here) A Superconductor Scandal? Scientists Question a Nobel Prize–Worthy Claim The discovery would change the world. From power grids that ne...
by Amber G.
28 May 2019 23:46
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

No self-respecting scientist will share raw data unless the journal where it is being published asks for it or there is evidence of fraud in which case the journal themselves ask for it or they ask the institute to enquire. That one can understand but interestingly normally graph files in preprint ...
by Amber G.
28 May 2019 23:34
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

^^^ Thanks for comments - Please put these comments . I am very interested in further developments. I hope that IISc and the authors can sort that out and before publishing can make sure.. It is a big thing so IISc's reputation is at stake .. (either way - if this turns out to be wrong). At present ...
by Amber G.
28 May 2019 17:58
Forum: Technology & Economic Forum
Topic: BR Maths Corner-1
Replies: 1759
Views: 96054

Re: BR Maths Corner-1

^^^Very Nice. (Agree that, like many of other "fun" problems I post are fairly easy and are meant to draw interest. The above problem is, as you said trivial using calculus, in fact this was originally meant for bright students in middle/high school and fairly easy even without using calcu...
by Amber G.
28 May 2019 03:51
Forum: Technology & Economic Forum
Topic: BR Maths Corner-1
Replies: 1759
Views: 96054

Re: BR Maths Corner-1

Okay, just for fun - For year 2019.
Given a, b, c are real positive numbers can you prove:

a^2 + b^3 + c^4 + 2019 > 79 (a+b+c)
by Amber G.
28 May 2019 02:32
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

Here is an example of why many are questioning the above data - (The pictures below is from BC's write up) From the older (original) paper: https://pbs.twimg.com/media/DkMyGCFVAAAaF12?format=jpg&name=medium Look closely at zoomed in part - look at the green and blue data points here - 10/ They h...
by Amber G.
28 May 2019 02:02
Forum: Technology & Economic Forum
Topic: India's Contribution to Science & Technology
Replies: 711
Views: 136647

Re: India's Contribution to Science & Technology

Superconductivity at ambient temperature from IISC, Bangalore. This is controversial but a major scientific breakthrough if true. https://www.thehindu.com/sci-tech/science/finally-iisc-team-confirms-superconductivity-at-room-temperature-pressure/article27246496.ece if proven this might be worth a N...
by Amber G.
28 May 2019 01:49
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

I have to be careful in commenting regarding the above news story. I am not an expert in this field but I do understand basics and have friends who are experts. I have read the paper (actually the original much debated ArXiv article posted few months, that article was never published or retracted. T...
by Amber G.
25 May 2019 06:10
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections : Results Discussion
Replies: 2982
Views: 92628

Re: 2019 General Elections News and Discussion

This was Nov 18, 2017 - The video where Piyush Goyal predicted telling R Sriram
that the BJP will be between 297-303 in the 2019 elections! As far as predictions go, this was bang on!

https://twitter.com/i/status/1131802405396516865
by Amber G.
25 May 2019 04:24
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

Murray Gell-Mann, a giant from my generation passes away. Caltech Mourns the Passing of Murray Gell-Mann (1929–2019) Murray Gell-Mann, Caltech's Robert Andrews Millikan Professor of Theoretical Physics, Emeritus, and a winner of the 1969 Nobel Prize in Physics, passed away on May 24, 2019. He was 89...
by Amber G.
22 May 2019 22:26
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections News and Discussion
Replies: 6200
Views: 469655

Re: 2019 General Elections News and Discussion

This is rather long (2 hour) technical presentation of Indian EVM's .. They are amazingly hack proof and reliable .. The presentation is by the renowned, IIT Prof who was involved in the design etc so it is for the technical people, yet most of the lecture (at least the first hour) can be followed b...
by Amber G.
22 May 2019 06:49
Forum: Technology & Economic Forum
Topic: BR Maths Corner-1
Replies: 1759
Views: 96054

Re: BR Maths Corner-1

Vayutuvan - thanks.
by Amber G.
22 May 2019 04:44
Forum: Technology & Economic Forum
Topic: BR Maths Corner-1
Replies: 1759
Views: 96054

Re: BR Maths Corner-1

Also, (since I don't see any news in MSM - specially Indian news papers - some more data,, Cutoffs Bronze: 16 Silver: 25 Gold: 31 Ranking 1. USA 2. Russia ... 28 India Team results at : http://www.imo-official.org/year_country_r.aspx?year=2018&column=total&order=desc Not a good show for Ind...
by Amber G.
15 Apr 2019 20:58
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

^^^ LIGO took 13 years to detect the first gravitational waves. As I said here, it was being estimated that the upgrade of LIGO will make it so that we may detect 1 every week or so..(After LIGO india comes on line it may be a daily event).. Anyway .. The upgraded LIGO has just detected two likely g...
by Amber G.
12 Apr 2019 02:59
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

This may be as good time as any to share Professor Stephen Hawking’s fantastic 16-minute animated explanation of black holes:
https://www.bbc.co.uk/programmes/p03h9y3b
by Amber G.
12 Apr 2019 02:06
Forum: Military Issues & History Forum
Topic: International Aerospace Discussion - Jan 2018
Replies: 1098
Views: 164670

Re: International Aerospace Discussion - Jan 2018

The odds of a spacecraft crashing or failing in orbit are quite high, sometimes as high as 60%. So despite Beresheet not landing successfully, the Israeli team achieved a lot. Bad luck on this attempt, Good luck for the next one. (Last picture sent by Israel's moon-craft) https://pbs.twimg.com/media...
by Amber G.
11 Apr 2019 21:44
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2507
Views: 82774

Re: Physics Discussion Thread

^^SMBH of our own galaxy will be the next candidate... It was a VERY long process .. such science takes a long time , patience and determination. The data (of the picture) was gathered about 2 years ago (2017), the computer program which analyzed the data and produced this picture was, I think was f...
by Amber G.
11 Apr 2019 07:57
Forum: Military Issues & History Forum
Topic: Indian ASAT Test
Replies: 868
Views: 104520

Re: Indian ASAT Test

Amber ji, Here’s how my high school brain worked it out. To stop mother earth from coming in the way, let us replace it with a point of equal mass at the center of earth. Let's use a stick of negligible width to stand on to throw the ball. The other end of the stick is fixed at earths center and th...

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