Today WhatsApp wished it's users good morning. Accept the updated terms and conditions or say goodbye. (Thread 1/n) It is effective from Feb 8, 2021.

A long but must read thread. Udaybhan Rathore and myth making in Maratha history: An analysis. This is the thread on Udaybhan Rathore, who he was and how over the time period, his life was portrayed in maratha chronicles and pseudo history. (1/n)

Udaybhan rathore was the head of Bhinai thikana (84 villages) in Ajmer. He was the direct descendant of the famous Rao Chandrasen, Raja of Marwar (4th generation) who resisted Akbar all his life and never made any alliance with mughals like Maharana Pratap. (2/n)

Later in 1783, Maharaja of Jodhpur gave title of Raja to Bhinai family for their military service. Bhinai family and their direct descendant Raja Sh Mayuraj Singh still lives in Ajmer. Anyway coming to Udaybhan Rathore and story of Tanaji. (3/n)

Jai Singh's march on Shivaji and treaty of Purandar (1665) is a well known episode to repeat here. After getting the hill forts from Shivaji under the treaty, Jai Singh didn't have enough man-power to man every one of the small forts because of his next (4/n)

campaign against Bijapur. Jai Singh personally took over a couple of important forts like Kondhana (Sinhgarh), Purandar etc. Others were given to some mughals or their fortification walls destroyed. Jai Singh died in 1667 near Burhanpur while enroute to the north. (5/n)

Hey, for people interested in this stuff, here's a thread about a change we made to running our facebook account:

So, about 5 years ago, we got on facebook. Why? Well, facebook has a big audience and they like to consume on facebook. So, we started posting comics there, even though we got paid nothing and facebook made money off the free content.

Why? Because back then, once in a while, you would say "also hey, I sell books" or "hey, I'm going to be signing at this event" and your facebook followers would actually see it.

Effectively, the implicit old arrangement was "facebook lets me reach readers efficiently, and I supply facebook with free content they run ads on."

Over time, like a bad business partner, facebook basically made it impossible to reach your audience without *paying them*. Thus, you supply them free content on which they run ads, and you get nothing in exchange.

November is here, and that means a massive shift is coming. And by "massive" I am of course referring to the redefinition of the kilogram unit of mass that the world has been building up to for more than 100 years. Let me explain:

1/ I've had an unhealthy fascination with metrology (the study of measurement) ever since my 2nd year as a physics major when I took a class devoted to duplicating historic physics experiments, so please indulge me for going into heavy detail (get it?) about the kilogram.

2/ So what actually *defines* a unit of measurement? If you're American, you probably know a mile is 5280 feet and a foot is 12 inches and an inch is 2.54 centimeters etc. But where does this chain of definitions end? Is it turtles all the way down?

3/ It's actually not! For all units (even the imperial units used in America) the answers all end with the Système International (SI) unit definitions established and maintained for over 100 years by the Bureau International des Poids et Mesures (BIMP) in France.

4/ At the base of this tower are the SI base units. Just 7 SI base units define every other unit in existence. They are:

Kilogram, kg (mass)
Meter, m (distance)
Second, s (time)
Kelvin, K (temp)
Ampere, A (electric current)
Candela, cd (luminous intensity)
Mole, mol (quantity)