2017-09-29 (Friday)

Today, I learned that:

In the current edition of the Science show from Radio National in Australia, I heard a word that I cannot recall having heard for more than 40 years. It was maybe the most common word that our teacher “Vektor-Pelle” used during the lectures in calculus.

The word is INFINITESIMAL, and in case you have never heard of it, it is exactly the opposite of infinity. While infinity is so big that we cannot even imagine it, infinitesimal is the smallest positive number possible, and still not 0. More of this interesting phenomenon can be found in reference # 1 below.

And while we are discussing words, for a person like me, utterly interested in words in different languages, tomorrow is the International Translation Day, see reference #2 below. Congratulations to my fellow colleagues of translation!

Finally, today’s header photo shows what the beginning of spring looks like in Paranavaí, PR, Brazil. The majestic tree sibipuruna, caesalpina peltophoroides, with all its yellow flowers colours both the treetops and the sidewalks. More information can be found in reference # 3 below.

That’s what I learned in school !


1: Infinitesimal

2: International Translation Day

3: Sibipirunas colorem a cidade e anunciam chegada da primavera

*: What did you learn in school today ?


2017-09-23 (Primavera)

Today, I learned that:

Since yesterday was the day of the equinox, when day and night have the same duration all over the world, today on the Southern hemisphere is the first day of Primavera, a word used in e.g. the Portuguese language to denote the season of Spring. It originated in ancient Rome, where it meant the beginning of Summer. Nowadays, it is Spring, but nevertheless I think the word is so graceful!

The photo below shows Rio Tietê, a very important waterway in the State of São Paulo, Brazil. It starts in the east, only 22 km from the South Atlantic ocean, but instead of taking the easiest route, it crosses all of the state to finally merge with Rio Paraná 1 150 km to the West. Se reference #1 below for more interesting information.



A photo taken on 2017-07-23 of Rio Tietê, a very important river in the North of the State of São Paulo, Brazil. It starts in the East, only 22 km from the South Atlantic ocean, but does not flow there. Instead it continues 1 100 km to the West, where it finally ends up merging with Rio Paraná. This bridge of highway SP-333 over the river is more than 2 km long.

In my latest post I invited you to a technical seminar in São Paulo on 2017-09-12. I was fortunate enough to start the seminar with my presentation of “A walk down the memory lane of electronics”. The seminar was a huge success, thanks everyone who showed up! In case you could not make it, do not worry, here is a photo from the presentation:

Swedcham 20170912

A photo from my speech. My daughter Karina shows the actual phone while I present it on the screen.


Photo taken by Jonas Lindström. I express my views on the future of gadgets, on my shirt is written ” I’m not always right – but I’m never wrong!”. Behind me are also two of the other speakers at the event, Guilherme Maciel and Johan Åhlund.

In reference # 2 below is the complete presentation and reference #3 is how Nordic Light reported the event. Enjoy!

That’s what I learned in school !


1: Rio Tietê

2: A walk down the memory lane of electronics

3: Swedcham news, from the past into the future

*: What did you learn in school today ?