Travel

All about travel, with a focus on food.

Easy Centigrade-Fahrenheit and Kilos-Pounds Conversions

Traveling between cities in the US and other countries requires conversions between Centigrade and Fahrenheit, as well as between Kilos and Pounds. Here's a easy way to do the calculations, inspired by the faint childhood memories of the Trachtenberg method of arithmetic manipulations, and achieving error rates of 1% or less.

Converting Centigrade to Fahrenheit
DSA: DOUBLE, SUBTRACT one-tenth, ADD 32
Converting Fahrenheit to Centigrade
SHA: SUBTRACT 32, HALVE, ADD one-tenth
The exact formula: °F = °C * 9/5 + 32
The easy formula is the same.

Easy conversion using D-S-A (or DSA32) steps, with example converting 14 °C:
1. Double: 28
2. Subtract one-tenth: 28/10 = 2.8, rounded to 3, gives 28 - 3 = 25
Ignore negative sign if any, to make it easier, and then put sign back again.
3. Add 32: 25 + 32 = 57 °F [exact value is 57.2 °F]

The exact formula: °C = (°F - 32) * 5/9
The easy but approximate formula: °C = (°F - 32) * 1/2 * 1.1

Easy conversion, using S-H-A (or 32SHA) steps, with example converting 57 °C:
1. Subtract 32: 25
2. Halve: 12.5
3. Add one-tenth: 1.25, rounded to 1.3, gives 12.5 + 1.3 = 13.8 °C [exact value is 13.888... °C]

If no rounding is done, these steps provide the precise Fahrenheit value, with no error. This calculation leaves an error of around 1%; adding 1% to final result will give a more precise value in Centigrade.
The exact error is (5/9 - 1.1/2) / (1.1/2) = 1.0101...%, but 99% accuracy should be good enough for most day-to-day purposes.
Calculator:  °C      °F (Exact & Easy)
  [Calculators Rounded to 1 Decimal Digit]
Calculator:  °F       °C (Exact)      °C (Easy)
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Travel

In this section, it's all about memorable places I have visited, and like to visit again and again. And the focus is on food - where to get some good eats while travelling.

I thoroughly enjoy visiting cities, exploring all the streets and suburbs of a city, taking things very slow and just wasting time sitting on a city bench or a sidewalk cafe, spending all the time watching the local people go about with their daily duties. Then there is food - absolutely the best part of travelling is exploring restaurants of all types, and what draws me back to a place is usually the memory of particular foods - for example, Schwartz's in Montreal, Jerusalem Cafe in NYC, and the taquerias in Mexico City.

I travel solo, and never make any definite plans about what I'll do when I get to a place - other than walk and eat, a strategy that works only in the truly memorable cities of the world.

Right now, I have two very favorite destinations -- Montreal, and any Latin America city. Montreal is just a six hour drive from Boston, so any three-day weekend is a sufficient excuse for me to get to Montreal. And my fascination with Latin America and its people have given me my most important hobby -- I am trying to learn Spanish (sad to say, I have made little progress on that count even after multiple years of attending non-credit courses at the local school -- but that is ok, this is turning out to be a lifelong quest :-) ).

Of all the cities described here, I'm most often in Montreal (at least 3-4 times in a year), and in Manhattan (at least 4-6 times in a year).

Ratings Guide

Two ratings provided - overall Food rating - flavor, quality, and value - how far does a dollar go. Best food or value gets 4 stars out of 4.

Food Rating:

  • 4 stars/4  Great food.
  • 3 stars/4  Good food.
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