2020-03-24 (40 anos!)

Today, I learned about:

Exactly four years have gone since I wrote a post about when I first set foot on Brazilian soil. That time, 36 years had gone since that historical step, 2016-03-24.

And here we are again, four years older, and maybe even wiser! So today makes 40 years since I came to Brazil as a trainee engineer, who would think that I would end up here? But here I am, and frankly speaking, I cannot complain! Life has been tough, but I have had my golden days, as well. And to celebrate those 40 years, what could be better than the Brazilian national drink, caipirinha? It is so easy to make and it is refreshingly tasteful. Look at another post, 2016-02-14, for the recipe and a photo. Saúde, cheers, skål !

All about COVID-19

I know that many of you are exactly in the same situation right now as I am, locked down at home, waiting for that nasty corona virus to disappear. The Chinese e-commerce giant Alibaba has elaborated and published a comprehensive story about what it is, how to treat it, etc. In ref. # 1 below, there is a copy of their report, it is really worth reading! And if you are so inclined, Alibaba is asking for volunteers to help translate the book into Korean and European Portuguese. More about that in ref. # 2 below.

That’s what I learned in school !

Ref.:

1: Handbook of COVID-19 Prevention and Treatment

2: Jack Ma Foundation shares coronavirus; prevention handbook

*: What did you learn in school today ?

2020-02-29 (Leap day!)

Today, I learned about:

Exactly four years have gone since I last wrote about what a leap day is, 2016-02-29.

And here we are again, four years older, and maybe even wiser! I was thinking about the poor guy that was born on 1896-02-29. He celebrated his birthday on the correct date of the year only when there were eight candles on his birthday cake. How come? Well, as you know a leap year normally happens only once every four years, but when the century is on its first year, then it must also be evenly divided by 400, i.e. 1600, 2000, 2400 etc. But then, he knew that if he lived that long, he would still celebrate it on the correct day with 12, 16, 20, 24, … candles!

‘Can you use an hourglass’?

Finally, here comes the solution to the riddle posted back in 2019-12-31:

You start with two loaded hourglasses at the same time. After 7 min, when the small hourglass is done, you turn it over and restart it.

After 11 min, when the big hourglass is done, you leave it as it is. But now you turn over the small hourglass, which has had a second run of 4 min, and let it run for the third time until it stops.

Voilà, you have now accomplished the task!

That’s what I learned in school !

Ref.:

*: What did you learn in school today ?

2020-01-09 (4 years!)

Today, I learned about:

Exactly four years have gone since I wrote my first post in this blog, 2016-01-09. It was really short, talking about potatoes, but it gave me the kick to want more. The story about why I started the blog was published on 2017-01-14.

Thank you all who follow my blog and write me with suggestions about what to publish in future posts!

A hint to ‘Can you use an hourglass’?

In my most recent post, on 2019-12-31 , I gave you a problem involving the use of two different hourglasses, with capacity of 11 min and 7 min, respectively, and asked you to measure exactly 15 min.

If you are still fighting with the solution, let me give you two important hints:

11 – 7 = 4

and

15 – 11 = 4

Can you solve it now?

A complete solution will be presented in my next post.

That’s what I learned in school !

Ref.:

*: What did you learn in school today ?