Saturday, May 30, 2020

How to get N95 Masks in India - कैसे पाएं मास्क? Yellow, White, Blue or Black ?

कैसे पाएं मास्क? पीला, सफेद, नीला या काला?

There are many colors of masks available in India of different colors.
What is the difference ?

What is the difference between N95, R95, P95 masks?

N95 is one of NIOSH's ratings for particulate filter respirator protection standards. "N" means Not resistant to oil, and "95" means the filtration efficiency is 95% or above. In addition to 95, there are classifications of N99 (the filtration efficiency is not less than 99%) and N100 (the filtration efficiency is not less than 99.97%).

N95, R95, P95 मास्क में क्या अंतर है?

N95 कण फिल्टर श्वासयंत्र सुरक्षा मानकों के लिए NIOSH की रेटिंग में से एक है। "एन" का मतलब तेल के प्रति प्रतिरोधी नहीं है, और "95" का अर्थ है कि निस्पंदन दक्षता 95% या उससे अधिक है। 95 के अलावा, एन 99 के वर्गीकरण हैं (निस्पंदन दक्षता 99% से कम नहीं है) और एन 100 (निस्पंदन दक्षता 99.97% से कम नहीं है)।

Buy KN95 Mask online - 5 stars reviews

COVID -19 के वैश्विक प्रकोप के साथ, सर्जिकल मास्क और श्वासयंत्र और अन्य महामारी की रोकथाम के उपकरण कम आपूर्ति में हैं। जैसा कि हम सभी जानते हैं, N95 मास्क COVID-19 के सुरक्षात्मक मास्क में सबसे अनुशंसित मॉडल है। तो क्या N95 और KN95 के बीच अंतर है? क्या N95 की जगह KN95 का उपयोग किया जा सकता है? N95 मास्क के विभिन्न मॉडल जैसे N95 1860, N95 9210 और N95 8210 में क्या अंतर है? इस पोस्ट में, हम आपको N95 VS KN95 मास्क के बारे में एक विस्तृत परिचय देंगे।

WeTransfer BANNED in India - what are the other options ?

During this COVID19 lockdown, Government of India via Department of Telecommunications has banned WeTransfer ! WeTransfer was used to send large files which would not fit inside an email attachment. It was one of the few ways of sending larger files (upto 2Gb) by mail, which isn't possible via Gmail.

Large files in the Office can be transferred by Pen Drive. OTG Pen Drives can  be used to send from Phone to Laptop also.

But in this lockdown, we cannot go to the office or use pen drives even to share files to the net door neighbor.

Why ?
It is not clear why it was blocked exactly.

The DoT has cited national interest and public interest as the reasons for banning the website.

There have been an outrage against Chinese Apps and software like TikTok, UCBrowser, WeChat and others, but this WeTransfer is by Dutchman Bas Beerens from Holland. Not China !
Bas Beerens
Bas Beerens is a Dutch entrepreneur who founded the file-sharing platform WeTransfer with Nalden (Ronald Hans) and Rinke Visser in 2009. Beerens also runs the design consultancy OY Communications, from which WeTransfer was developed, initially as OY Transfer.
Use another alternative Free File transfer website like WeTransfer. Or use a Pen Drive

  • WeSendIt ..
  • Google Drive..

Friday, May 22, 2020

COVID19 and the LockDown - finally a time to sit down, read and introspect.

After several years, I am reactivating this blog. Why ?

Covid19 - hopefully the last disaster of 2020. Unfortunately, it has become a global pandemic and necessitated a lockdown in most of the world.

This lockdown is indeed a good time to catch up on Books and Podcasts.

Try the Amazon Audible Trial for India.

The audiobook is something hardcore readers may shy away from - but that is without understanding the concept. If you have only ever experienced a robotic voice reading a book - please understand that that is not what audiobooks are.

Audiobooks are read by humans as storytellers,
some of their voices show the emotions and stories come alive with their voice emoting. Most importantly, audiobooks are useful when you are doing something else with your eyes and cannot read. They are best when driving, while at the gym, while waiting in line without a book in hand. Have a go at audiobooks with this free trial from Audible.
Audible Free Trial (

Audible Free Trial

Saturday, August 15, 2015

Best waterproof Android phones for 2015 and the Ingress Protection Marking

The IP Code, International Protection Marking, IEC standard 60529, sometimes interpreted as Ingress Protection Marking, classifies and rates the degree of protection provided against intrusion (body parts such as hands and fingers), dust, accidental contact, and water by mechanical casings and electrical enclosures. It is published by the International Electrotechnical Commission (IEC).

It helps to measurably understand the degree of water-proofing or water-resistance of devices.

P.S. If your phone fell in water or became wet in some other way, READ THIS FIRST to know how to fix a wet water-damaged phone

To prevent your non-waterproof phone getting wet while in the rain or near the swimming pool or while riding a bike, you could use this cover instead ( - Amazon Affiliate Link) It is quite cheap and allows you to use the phone including touchscreen safely.

Liquid ingress protection

The second digit of the IP Code indicates the level of protection that the enclosure provides against harmful ingress of water.
LevelProtected againstEffective againstDetails
0Not protected
1Dripping waterDripping water (vertically falling drops) shall have no harmful effect.Test duration: 10 minutes
Water equivalent to 1 mm rainfall per minute
2Dripping water when tilted up to 15°Vertically dripping water shall have no harmful effect when the enclosure is tilted at an angle up to 15° from its normal position.Test duration: 10 minutes
Water equivalent to 3 mm rainfall per minute
3Spraying waterWater falling as a spray at any angle up to 60° from the vertical shall have no harmful effect.Test duration: 5 minutes
Water volume: 0.7 litres per minute
Pressure: 80–100 kPa
4Splashing of waterWater splashing against the enclosure from any direction shall have no harmful effect.Test duration: 5 minutes
Water volume: 10 litres per minute
Pressure: 80–100 kPa
5Water jetsWater projected by a nozzle (6.3 mm) against enclosure from any direction shall have no harmful effects.Test duration: at least 3 minutes
Water volume: 12.5 litres per minute
Pressure: 30 kPa at distance of 3 m
6Powerful water jetsWater projected in powerful jets (12.5 mm nozzle) against the enclosure from any direction shall have no harmful effects.Test duration: at least 3 minutes
Water volume: 100 litres per minute
Pressure: 100 kPa at distance of 3 m
6KPowerful water jets with increased pressureWater projected in powerful jets (6.3 mm nozzle) against the enclosure from any direction, under elevated pressure, shall have no harmful effects.Test duration: at least 3 minutes
Water volume: 75 litres per minute
Pressure: 1000 kPa at distance of 3 m
7Immersion up to 1 mIngress of water in harmful quantity shall not be possible when the enclosure is immersed in water under defined conditions of pressure and time (up to 1 m of submersion).Test duration: 30 minutes
Tested with the lowest point of the enclosure 1000 mm below the surface of the water, or the highest point 150 mm below the surface, whichever is deeper.
8Immersion beyond 1 mThe equipment is suitable for continuous immersion in water under conditions which shall be specified by the manufacturer. However, with certain types of equipment, it can mean that water can enter but only in such a manner that it produces no harmful effects.Test duration: continuous immersion in water
Depth specified by manufacturer, generally up to 3 m
9KPowerful high temperature water jetsProtected against close-range high pressure, high temperature spray downs.Test duration: -
Water volume: 14–16 litres per minute
Pressure: [8000–10000 kPa / 80–100 Bar] at distance of 0.1–0.15 cm
Water temperature: 80 °C

Let's get started with the phones :

Sony’s Xperia Z3

Sony started the ball rolling for high-end water resistant smartphones when it announced the Xperia Z back in 2013. Since then, almost all its top-of-the-range Xperia Android phones have been able to survive a dunking. The Xperia Z3 is the current flagship phone from Sony, and it scores highly on the ingress protection scale, attaining a rating of IP65/IP68. According to Sony, the reason it gets two ratings is because it complies with both the waterproofing standards. The Xperia Z3 Compact has the same IP rating, but comes with a smaller 4.6-inch, 720p screen.

Xperia Z3V and older Z phones

The Xperia Z3 is joined by the Xperia Z3V, a spin-off that’s exclusive to Verizon. It has the same specifications, just operates on a different network. There are several older Sony options out there, and if you’re after a water resistant bargain, the T-Mobile IP55/IP58 Xperia Z1S can still be purchased as a pre-owned phone through the network. It has the same ratings as the Xperia Z2, but a slightly smaller 5-inch, 1080p screen, and a Snapdragon 800 processor.

If you’re not worried about your new watertight phone being bang up to date, the Z1 and the Z1 Compact are also possibilities, while the Sony Xperia Z Ultra is the only big smartphone we know of with IP55 and IP58 ratings. You’ll struggle to find any of them new though.

Xperia M4 Aqua

Looking for a phone that looks normal, but still works if it gets a soaking? The Sony Xperia M4 Aqua could be for you. Like other Xperia phones, it has an IP65/IP68 rating, making it more effective at keeping dust and water than most other devices on our list. The 64-bit, octa-core processor, 5-inch 720p screen, and 13-megapixel camera makes it even more attractive. What’s more, it has Android 5.0 installed as standard, and the battery should be good for two days. It was announced in March, and the on-sale date is expected in the near future.

Xperia Z4

Sony has announced the Xperia Z4, but so far only for Japan. The 2015 flagship Android phone continues with tradition, and the body holds an IPX5/IPX8 rating, which puts it in the same category as the Xperia Z2, but not quite as impressive as the Z3. The phone isn’t released until later this year, when it should also see a wider release.

Samsung’s Galaxy S5

Samsung’s flagship phone for 2014, the Galaxy S5, scores a rating of IP67. That means it can be submerged up to 1 meter in depth for up to 30 minutes, and no dust particles are able to enter the phone at all. You will need to make sure that the plastic flap that covers the USB port is securely closed and, since you can open the back, double check that the cover is firmly in place.

The trouble is, Samsung’s newest flagship phone, the Galaxy S6, is terrified of the water. The Galaxy S5 is still available to buy new, and also as a pre-owned smartphone through networks such as AT&T, but it won’t be around for ever now it has been superseded.

How to dry and fix a phone or mobile that fell in water with rice, cat litter or silica gel

Mobile phones have become a part of modern life and so much information is stored on these devices. But as people have started carrying these everywhere, the chance of these getting wet and damaged is more and more.

Best option is to get a waterproof phone or get a Liquipel waterproof coating for your non-waterproof phone.

This is a list of best Android phones of 2015 which are waterproof.

But often that is something that  is kept for tomorrow.

Today we shall see the best and easiest ways you can dry and (hopefully)fix a wet phone or tablet or any other electronic device.

Fix water damaged cellphones with rice or silica gel

First and foremost tip : DO NOT turn the device ON immediately.
This can short out the electronics of the device.

FIRST, we dry the device and THEN we see if it is working or not.

QUICK Life Pro Tip : If you want to use Silica Gel Packets, these cheap ones work very well !

  • Take the phone out of the water as soon as possible. Ports for hands free kit, tiny hole for microphone, charging, usb cable connectivity and the plastic covers on cell phones even though tight can freely allow water to enter the phone in a just a few seconds of time. Grab your phone quickly, and turn it off immediately, as leaving it on can cause it to short circuit – if it has been in water, assume it is waterlogged whether it is still working or not.

  • Your phone may not be too damaged if you take it out of the water right away. A longer period of immersion, such as being in the washing machine cycle, is more cause for alarm. It is still worth trying the following steps to attempt saving the phone, before giving up.
    • If the phone is connected to a wall charger and is also submerged in water, do not attempt to remove it from the water. Seek a professional immediately to ask the proper steps to do this safely (as in turning off a main power switch, or similar action). Electricity and water do not mix and can result in electrical shock. However, if your phone was NOT connected to a wall charger but fell into water, remove the phone from the water as quickly as possible, and proceed with the next few steps.
    • Acting quickly can make all the difference in being able to save your phone from water damage, however don't panic. Maintaining a level head is key to working more efficiently under pressure.

Thursday, July 23, 2015

How to go to and What website ccTLD addresses does my Blogger address have ?

What website addresses does my address have ?

Google's blogger has many different country level domains for each single blogspot domain.

How to stop blogspot from redirecting to a country domain ?

If you type /ncr just after the domain name for example- , then it will not redirect to your local domain. 

Anyway, as a blog master your shouldn't let the visitors follow any boring way to prevent redirection. Because you can control the redirection by the code below! Okay let's try: 

  1. Make sure you're signed in to your blogger's control panel I mean design or dashboard.
  2. Now go to the template option. (Backup your template if necessary)
  3. Click on Edit HTML. Now you can see the code of your template. 
  4. Hit on the template box and Press Ctrl+F to enable search within the code box.
  5. find the of your template and then copy the code below and place it just below the head tag. (Look at the image below)
  6. Save the template. Done! 

BUT Why do this ?

The ccTLDs were made by Blogger to make country specific censorship easier.

Some countries are quick to censor content posted on blogs and since many such governments do not know much about how the internet works, they simply ask the ISPs to blobk the whole domain.

They issue the order, block, and POOF ! All blogspot blogs are blocked.

What happens when Blogger is banned in a country ? 

Naturally when blogger is banned by the Govt. of a country the visitors from that country will not be able to see your site. But they will be able to visit the .com version of your site by  using /ncr just after the domain. But if you use the above code in your site, visitors will automatically be able to visit your site!

I think now you understand the importance of using this code

Here is a list of blogspot domains.

August 2015 Whatsapp Updates - Mark Unread, Google Drive, Mute Contact, Low Data

Latest updates in Whatsapp

1. Mark as Unread

With the upcoming update, Android users will soon be able to mark messages as unread even after reading them.

To be clear, this feature does not make it appear as if you have not read the message yet, and your messages will appear as read to senders even after you mark them as unread.

Instead, it can be used to highlight messages so you can get back to them later. Also, marking a message as unread will not change the order of conversations on the app.

2. Custom notifications

WhatsApp is bringing its whole set of custom options, which are available only for the whole app at present, for individual contacts.

For example, if you want to set a specific ringtone for a contact, you can select any song from your playlist, so you know the messages and calls are from that particular person even without looking at your smartphone.

Similarly, you can set notification light colours, separate call and message ringtones, enable or disable vibrations and pop-up notifications for each contact.

3. Mute individual contacts

Wednesday, July 22, 2015

'Archie' comics cartoonist Tom Moore dies in El Paso, Texas - Also how does Archie Andrews die ?

Tom Moore, the Archie creator who brought to life the escapades of a freckled-face, red-haired character, has passed away in El Paso, Texas at the age of 86.

Moore, who began drawing cartoons while in the U.S. Navy during the Korean War, died early Monday morning while in hospice care in his hometown of El Paso, his son Lito Bujanda-Moore told The Associated Press on Tuesday. He said his father was diagnosed with throat cancer within the past week and chose not to undergo treatment.

Moore drew Archie Andrews and his friends on and off from 1953 until he retired in the late 1980s. Annual sales of the comic regularly surpassed half a million during the 1960s, according to the El Paso Times.

“I did one comic book a month,” Moore told the newspaper in 1996. “I did everything. We always worked six months ahead. I’d be doing Christmas issues in June and beach stories with a foot of snow outside my window.”

After the war, Moore used funding available through the GI Bill to attend a school in New York for cartoonists. He studied under “Tarzan” comic strip illustrator Burne Hogarth.

Tuesday, July 21, 2015

Unicellular Eye found in a Dinoflagellate Warnowiid - iCell

In an article/letter published in the Journal "Nature" on July 1st, 2015(paywalled), Gregory S. Gavelis, Shiho Hayakawa, Richard A. White III, Takashi Gojobori, Curtis A. Suttle, Patrick J. Keeling & Brian S. Leander explain that they found a single celled eye in the already complex unicellular Warnowiid Dinoflagellate.

Warnowiid Dinofalgellates are plankton have been previously been studied for their highly elaborate ultrastructural systems: pistons, nematocysts, and ocelloids in a single celled eukaryote. (free full text)

But that is nothing compared to the complexity of an eye. The human eye is very complicated, but the octopus eye is even more so, and more efficient. Come to think of it, Octopi can actually sense light with their skin !

Single celled organism with an EYE (Ocelloid)

This Dinoflagellate Warnowiid is a single-celled sea orgaism that has fashioned itself an eye with a basic lens, cornea and retina. That is incredibly complex for a single cell.

In fact, the ‘ocelloid’ within the planktonic predator looks so much like a complex eye that it was originally mistaken for the eye of an animal that the plankton had eaten.

The warnowiid is found off the coast of Canada and Japan, but only in tiny numbers. Researchers first stumbled across one more than a century ago, but studying the creature proved difficult because it rapidly disintegrates after being taken out of seawater.

To catch his own warnowiid, Gregory S. Gavelis searched seawater samples under a microscope for a year. When he eventually found one he froze it in plastic resin, preserving it like a fly trapped in amber. He then made a 3-D model by taking snapshots of the warnowiid under an electron microscope – and was stunned by what he saw.

While other single-celled creatures can detect light using “eyespots” – simple structures that allow an organism to tell dark from light – the warnowiid seemed to have repurposed its internal organelles to form what resembled the lens, cornea, iris and retina of a complex eye.

The “cornea”, for example – the transparent outer layer at the front of the eye – was made of mitochondria, the bits of the cell normally responsible for energy production. The mitochondria in the warnowiid interlocked to form a sheet-like layer around the lens, curved to concentrate incoming light on to the “retina”.

(Left : Electomicrograph Right :Schematic ) of the Eye of the Warnowiid

The light-sensing “retina” at the back of the eye was made up of plastids, structures normally involved in photosynthesis. The team extracted genetic material from inside the plastids and found it rich in algal DNA. The team suspects that at some point during evolution, a warnowiid ancestor gobbled up some algae and adopted its photosynthetic equipment. When the organism later abandoned photosynthesis for the predatory life, it repurposed its light-capturing plastids into a light-sensing organ.

What is the Warnowiid Eye used for ?

It is not clear how warnowiids use their “eye”, but the authors believe they’re used to hunt. Warnowiids spiral through the water as they swim and Gavelis thinks the eye lets them see flashes of light as it bounces off the single-celled organisms that are their prey. The lens likely concentrates incoming light to increase sensitivity – rather than projecting an image as our own eye does.

Solution to A0A1A0A1A0C1 A0B1A0A1C0 A0B1D0A1 A0C1A0A1B0 B0A1E0 riddle - Spoiler alert

There was a secret code puzzle posted on reddit a few days ago. In the days before internet, that meant days and days of looking for a solution and finally somebody figures it out.

And then, someone else figures it out. Very very slowly.

But now that we are in the age of the internet, collaborative puzzle solving is the norm.

So, here is the puzzle :

And Spoiler alert : the solution is also posted below it.

The code: A0A1A0A1A0C1 A0B1A0A1C0 A0B1D0A1 A0C1A0A1B0 B0A1E0 A0B1A0A1B0A1 A0C1B0B1 B0A1E0 A0D1B0A1 A0B1A0D1 A0C1A0A1A0A1 A0C1B0A1A0 B0A1E0 A0C1A0C1 A0B1A0D1 A0C1B0A1A0 A0C1B0B1 A0C1A0A1B0 B0A1E0 A0B1A0C1A0 A0B1A0A1B0A1 A0B1B0C1 A0B1A0A1C0 A0C1A0A1B0 A0B1A0B1A0A1 A0B1D0A1 A0C1B0A1A0 A0B1B0A1A0A1 B0F1 B0A1E0

A hint has been given: "There are thirty blocks of code. Each 'block' of code needs to be translated into an intermediate code, which can be translated into English"

P.S. Those are zeroes, not the letter O.







Sunday, July 19, 2015

GIF of Aerial Mid air refuelling of a fighter jet - Super Hornet

Aerial refueling, also referred to as air refueling, in-flight refueling (IFR), air-to-air refueling (AAR), and tanking, is the process of transferring aviation fuel from one military aircraft (the tanker) to another (the receiver) during flight.

The procedure allows the receiving aircraft to remain airborne longer, extending its range or loiter time on station. A series of air refuelings can give range limited only by crew fatigue and engineering factors such as engine oil consumption. Because the receiver aircraft can be topped up with extra fuel in the air, air refueling can allow a takeoff with a greater payload which could be weapons, cargo, or personnel: the maximum takeoff weight is maintained by carrying less fuel and topping up once airborne. Alternatively, a shorter take-off roll can be achieved because take-off can be at a lighter weight before refueling once airborne. Aerial refueling has also been considered as a means to reduce fuel consumption on long distance flights greater than 3,000 nautical miles (5,600 km; 3,500 mi). Potential fuel savings in the range of 35-40% have been estimated for long haul flights (including the fuel used during the tanker missions).

The two main refueling systems are probe-and-drogue, which is simpler to adapt to existing aircraft, and the flying boom, which offers faster fuel transfer, but requires a dedicated operator station.

Usually, the aircraft providing the fuel is specially designed for the task, although refueling pods can be fitted to existing aircraft designs if the "probe-and-drogue" system is to be used. The cost of the refueling equipment on both tanker and receiver aircraft and the specialized aircraft handling of the aircraft to be refueled (very close "line astern" formation flying) has resulted in the activity only being used in military operations. There is no known regular civilian in-flight refueling activity. Originally employed shortly before World War II on a very limited scale to extend the range of British civilian transatlantic flying boats, and then after World War II on a large scale to extend the range of strategic bombers, aerial refueling since the Vietnam War has been extensively used in large-scale military operations for many different military aircraft operations. For instance, in the Gulf War and the Iraqi invasion of Kuwait and the Iraq War, all coalition air sorties were air-refueled except for a few short-range ground attack sorties in the Kuwait area.

How to get N95 Masks in India - कैसे पाएं मास्क? Yellow, White, Blue or Black ?

कैसे पाएं मास्क? पीला, सफेद, नीला या काला? There are many colors of masks available in India of different colors. What is the difference ? W...