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The hot water that falls from the shower does not need to reach 100ºC to transform into a gaseous state. If water only turned to vapor at 100ºC, there would never be rain, as water from rivers, lakes and seas would never evaporate. The secret is that, in addition to boiling, which requires reaching 100º Celsius, at sea level, for water to change from a liquid to a gaseous state, there are two other ways. The first is heating, a change from liquid to vapor that can even occur immediately, with the water being at room temperature, depending on specific conditions. It occurs when you throw water on a hot plate, for example. The second is evaporation. To evaporate, water needs to be just a little warmer than the air. This is where the evaporation of water from rivers, seas and lakes comes in, which occurs on the surface, as water molecules gain enough energy to transform into vapor, at room temperature, depending on atmospheric pressure and other factors. The hot water that falls from the shower also undergoes evaporation: The electric shower or heater can generate this difference in temperature to make the water turn into steam. Droplets that fall at a temperature at least 20ºC higher than the ambient temperature have a good chance of evaporating. Just to give you an example, in a very hot bath, with an average temperature of around 45ºC, around 10% of the water is lost in the form of steam. In a common electric shower, this means that around 1.5 liters pass into a gaseous state during a quick shower lasting just five minutes. Steam is formed by water molecules that have managed to transform into a gaseous state. What defines the state of water — solid, liquid or gaseous — is the agitation of its molecules. The more you stir, the higher the temperature of the liquid. In the water that flows from the shower at an average of 40ºC, for example, there are some droplets with molecules in agitation equivalent to 50ºC. For them, it is easier to break away from the water column and become vapor. In that same bath at 40ºC, there are droplets in which the molecules have a temperature of 30ºC. As its molecules are less agitated, they have less energy and cannot pass into the gaseous state. They remain in a liquid state and guarantee our bath. Source: Text adapted from an article in Revista Superinteressante, produced by Fernando Tió Neto and updated on July 4, 2018.

“Humor is the brother of poetry, humor is the denouncer. I don't have the ability to fix anything, but I have the obligation to report everything, because that is the comedian's first obligation. Humor is everything, even funny.” Chico Anysio (1931 - 2012) Below, a "small" exhibition of 25 of the 209 characters that brought to life the refined humor of Brazilian comedian Chico Anysio.

“I know that it is difficult to let go of your own preferences; but it is precisely in this that the nobility of the scientist consists.” Norberto Bobbio (1909 - 2004)

"A statesman thinks about the next generations, a populist thinks about the next elections". James Freeman Clark (1810-1888)

1 ST POST This site is born eclectic, it will seek to be plural, with varied themes and opinions, with an emphasis on Innovation, Science and Technology. Here we observe technology not only focusing on its speed and practicality, but as a convergence factor for reflective thinking about everything that "passes" ; ahead of us. We need to understand the meaning of changes and strengthen our ability to influence them consciously.

SCIENCE AND TECHNOLOGY The origin of the arroba symbol is not known for sure, but it is believed that it appeared in Antiquity, between the Greek and Roman civilizations to abbreviate the expression of equivalence between the weight of goods. Over time, the arroba became a unit of measurement, generally used in the animal or grain trade: 1@ = 14.688 kg. The use of the symbol in computing only took place in 1971, when programmer Ray Tomilson used it for the first time out of pure sympathy and convenience. Ray needed a symbol that was compatible with most networked systems and that was different enough not to be confused with the characters in people's names. Fashion has caught on and you can't send an email (or tweet) without typing it. He combined the useful with the pleasant by using a symbol that was already known by the nomenclature "at", which in English means the preposition "in". This way, the person's name, added to the @, indicated the location of the email on the network (name@domain.com). Fashion has caught on and you can't send an email (or tweet) without typing it. Source: UOL Tecnologia – 12 .feb.2011

SCIENCE AND TECHNOLOGY The Bluetooth symbol is directly linked to the name of the technology, which in turn is a tribute to the former king of Denmark Herald Bluetooth. The creators of the technology decided to name it this way because, like Herald, which united Norwegian, Swedish and Danish tribes, Bluetooth is intended to connect different electronics around the same port. The symbol is the combination of two letters, Hagall and Berkanan, belonging to two Nordic alphabets. Source: UOL Tecnologia – 12 .feb.2011