Archive for May, 2007

May 30 2007

Profile Image of Bruno Afonso
Bruno Afonso

Creacionismo: a palhacada continua

Filed under Science

Cremus
Ha’ coisas que irritam qualquer ser pensante. Uma delas e’ esta. Vejam toda a historia aqui, com links para se divertirem com umas horas de leitura. A coisa comeca a tornar-se seria neste pais, onde o dinheiro impera. E quando um grupo tem dinheiro, pode fazer praticamente tudo o que quer, influenciando pessoas ignorantes.

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May 30 2007

Profile Image of Bruno Afonso
Bruno Afonso

Curtam o novo brinquedo da m$

Filed under geekalhadas

Curtam la’ isto

Picture 1

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May 29 2007

Profile Image of Bruno Afonso
Bruno Afonso

Tango’s fundamental underlying physics

Filed under Antidepressivos, Muzak

From here. Brilliant!

I think we would all have a better knowledge of tango if we understood the
fundamental physics underlying it. I have been researching the academic
journals and for your education and enjoyment I have summarised the current
state of knowledge. It answers such unresolved questions such as:

Why is tango so difficult?
Why do you never see three people dancing tango together?
Why collisions occur on the dance floor.
Why tango exists.

Some knowledge of quantum physics is desirable but by no means essential.
Now read on…

Tango Physics

The laws of physics apply to tango just as they do to other phenomena. Here
is a summary of current knowledge, obtained from leading text books and
recent research papers. Some of the more advanced theories must remain
speculative, pending further research.

Basics

Tango consists of the interaction of electrically charged particles
operating within a musical energy field.

There exist just two types of elementary particle: the tanguera particle and
the complementary tanguero particle.

The tanguera particle (or simply tanguera) is electrically charged by the
addition of high heeled shoes and a glamorous dress. The quantity of charge
is directly proportional to the height of the heels and inversely to the
quantity of material in the dress.

In contrast to the tanguera, the tanguero particle is more easily and
economically charged. The very appearance of a suitably charged tanguera is
usually sufficient to charge the tanguero. Some tangueros find themselves
already charged on waking up in the morning, for no apparent reason. The
quantity of charge appears totally unrelated to the tanguero’s shoes or
apparel. Indeed, it also seems to be based on the tanguera’s shoe height
and dress material.

Having complementary charges, the tanguera and tanguero are naturally
attracted to each other. The force of attraction is proportional to the
product of their individual charges and inversely proportional to the square
of the distance between them (the inverse square law). As this distance
approaches zero (the so-called close embrace) the attraction increases
without limit, leading to important and potentially unstable quantum effects
(see below).

The charges of two such particles in a close embrace cancel each other
(being of opposite polarity) and the couple become electrically neutral,
thus attracting no further particles. This is why you hardly ever see three
particles dancing together. (The Tango Lesson was trick photography.) It
also explains why couples (which are electrically neutral) can collide with
each other.

Two tanguera particles have charges of the same polarity and are therefore
likely to repel each other, especially if wearing similar shoes or dress.

Two tanguero particles are able to happily co-exist in spite of the
similarity of their charges. The exception to this occurs in the presence
of a single tanguera particle, when one of the tangueros attaches to the
tanguera and the other is ejected.

Interactions of particles

Tango particles interact within a chamber known as a milonga under the
influence of musical energy supplied by an orquestra or, more cheaply, a
portable CD player.

The particles resonate with the application of the musical energy. Ideally
the particles resonate in proportion to the energy supplied (the basic
energy of Argentine tango, or ‘beat’ for short). However, not all particles
resonate at the appropriate frequency. Those which do are said to possess
the property of musicality. Tanguera particles are particularly strongly
attracted to tangueros possessing this property.

A tanguero at the extreme of the distribution, usually resonating at an
excessively high frequency relative to the beat is known as the null
tanguero particle. Continued contact with the null tanguero will usually
cause the tanguera particle to become completely electrically discharged and
to leave the dance floor.

Newton’s laws of tango

1. A tanguera particle will remain at rest or continue in constant motion
unless acted upon by a force, usually applied by the tanguero particle.
2. A tanguera of mass m, acted upon by a force f exerted by the tanguero
will move with an acceleration a according to a = f/m. Beyond this, it is
generally unwise to refer to the mass of the tanguera particle.
3. For every tango teacher there is an equal and opposite tango teacher.
E.g. if a teacher says one should never lead with the left hand, then there
exists somewhere a teacher who says this is permitted or even encouraged.
If one teacher says the cross should be led, there is another who says it
isn’t. This is why one should never change teacher, except in extremis.

Tango and chaos theory

The discovery of the mathematical theory of chaos in the 1980s shed new
light on some unresolved mysteries in tango. Just as a butterfly flapping
its wings in South America can cause a cyclone in Europe, so a misplaced
step in one part of the dance floor can cause, through a consequential
series of collisions, avoidances and sudden changes of direction, several
particles to trip over each other some time later in another part of the
milonga.

This is particularly likely if a new (i.e. inexperienced) tanguero particle
enters the dance floor, holding an excessive charge due to the close
proximity of so many charged tangueras. Attempting to restore its
equilibrium and shed excess energy, it moves at high velocity with many
sudden and unanticipated changes of direction. This initiates a series of
collisions which turns an initially orderly dance floor (low entropy) into
one of disorder (high entropy).

Chaos also reveals itself at the level of individual particles, for example
when executing a giro. The giro normally progresses according to the well
known Salas-Naveira equations of motion. However, a tiny perturbation to
the initial step can become magnified in subsequent steps such that the two
particles complete the giro in totally the wrong positions or, in the worst
scenario, fly apart completely. This solves the mystery of why the tango is
so difficult.

Why tango particles exist

Very occasionally two particles resonate together with perfect symmetry and
harmony, in time with the beat. The force of attraction between them
increases as the distance between them decreases until they effectively
become, for a short time, a single particle (a singularity in mathematical
terms). These are the quantum effects referred to above and they lead to a
tear in the very fabric of space-time itself and the particles disappear
from view, into a state known as nirvana (in the popular imagination this is
often located in the Buenos Aires area of Latin America). No communication
with the particles is possible during this time. The particles only
reappear when the energy supplied by the musical field is turned off.

We can only speculate where the tango particles go. The particles
themselves are quite unable to explain since, for them, time has slowed to a
standstill (in accordance with Einstein’s theory of relativity). Indeed,
some of them are incapable of speech for several minutes on their return.
However, there is general agreement that this state of nirvana is the very
reason for the tango particles’ existence.

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May 29 2007

Profile Image of Bruno Afonso
Bruno Afonso

Destruindo mitos: cervejas

Filed under trivia

Liquor store ao pe’ da minha casa:

Cerveja1

Em Portugal sempre achei que na america nao havia cerveja de jeito. O contacto com a birra americana limitava-se ‘a Budweiser (a proposito, ver isto: Czechvar e’ mto bom!). Mau. Bud e’ ma’, em qualquer lado do mundo, fresca, gelada, quente, morna ou em 99% mistura de vodka. No entanto, ha’ boa cerveja aqui. Nao so’ ha’ boa cerveja americana como de qualquer lado do mundo! Na realidade, os Portugueses nem podem falar muito de cerveja. Temos meia duzia de variedade a nivel nacional. Nao ha’ variedades locais como na Belgica, Alemanha e outros sitios… a maior parte das pessoas apenas conheceu provavelmente sagres e super bock, nas versoes loiras e afro. Grande parte das pessoas apenas conhece a versao imperial/fino de cerveja. Nao ha’ nada de errado com a Sagres e Super Bock como se pode ver aqui, antes pelo contrario. Nao ha’ e’ uma cultura de apreciar cerveja em geral. Bebe-se a imperial e se queremos mais so’ num irish/english pub. Nao ha’ em geral uma nocao do que e’ uma Ale ou Lager (Sagres), muito menos uma Pale Ale ou Pale Lager (Super Bock, provar Pilsner Urquell).

Da proxima que pensarem em estados unidos e cerveja na mesma frase nao alimentem o mito de que nao ha’ cerveja de jeito nos US. Ha’ bastante, nacional e internacional! Nestas prateleiras devem estar para ai’ 25-35% de cervejas nacionais.

Cerveja2

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May 28 2007

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Bruno Afonso

Trunfa do menino

Filed under Diário de Bordo

Ou se a minha mae ve isto mete-se no aviao com um par de tesouras na mao…

trunfa
trunfa

9 responses so far

May 25 2007

Profile Image of Bruno Afonso
Bruno Afonso

Importante

Filed under Science

Este texto e’ interessante. Recomendado para cientistas, jovens e politicos.

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May 23 2007

Profile Image of Bruno Afonso
Bruno Afonso

Harvard Square music: annoying instrument man

Filed under Muzak

Meus amigos, hoje vou-vos falar de um cromo que costuma estar em Harvard Square. Bem longe de ser um evento com a dimensao do Mayfair, e’ um evento. Mais concretamente, um one-man show. O problema e’ que e’ mau. E’ mau, mesmo mau. Vejam o video abaixo… Digo-vos que e’ pior ao vivo. Apenas ao vivo o nosso cerebro paraliza com a dor daquele som agudo, constante e inesperado que o homem saca daquele instrumento (violino japones??) do demo. Este senhor e’ o exemplo musical perfeito de uma random-walk, um percursos aleatorio e inesperado: sem a minima nocao de tonalidade e quejandos. Diria mesmo que e’ um processo estocastico musical que cambaleia fruto de uma estoicidade unica e apenas possivel por uma ausencia de dor musical. Nao sei quem lhe paga…

‘As vezes depois de passar 20 sec a ouvir o homem enquanto passo por ele, apetece-me fazer isto:

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May 23 2007

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Bruno Afonso

“A Vida é Feita de Pequenos Nadas” e’…

Filed under Amizades, Web

… o nome do novissimo blog de uma amiga minha! Venceu a letargia e abriu o seu blog! Como ja’ lhe disse, agora so’ falta o mais dificil: continuar a meter posts regularmente e interessantes!

Para ja’, a coisa promete. Uma bela foto da Bica e um bom gosto musical: Sergio Godinho, que editou recentemente um novo album e tudo. Confesso que gosto mais da musica “O primeiro dia” mas pronto… :-)

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May 23 2007

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Bruno Afonso

Q #5

Filed under Muzak, Quotes

Lo importante es saber para qué queremos bailar. Bailamos una soledad que tenemos dentro de nosotros y no la podemos ocupar con nada. Ese vacío al que le ponemos movimiento es el tango. Carlos Gavito.

Carlos Gavito & Marcela Durán - Gallo Ciego

Tive hoje a minha primeira aula de Tango Argentino.

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May 22 2007

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Bruno Afonso

Geekalhada das fortes meets Moleskine

Filed under geekalhadas

moleskineHD
moleskineHD

Um disco externo dentro de um Moleskine! Isto e’ lindo. Leiam o artigo!

One response so far

May 22 2007

Profile Image of Bruno Afonso
Bruno Afonso

Visto: 3 women

3Womencriteciondvd


Ha’ umas noites vi o 3 women, presente na coleccao da Criterion. Incontornavel para fas de Robert Altman e David Lynch, este filme e’ do mais maradito que se pode encontrar. Grande parte do filme passou-me ao lado. A rever, com tempo. Recomendo. Sinto falta de grandes filmes.

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May 22 2007

Profile Image of Bruno Afonso
Bruno Afonso

HCB em Evora, ate’ 29 de Julho

Ezrapound
Henri Cartier-Bresson (HCB) mudou o mundo da fotografia. Mais do que um fotografo de almas, HCB e’ um professor/mestre esquivo e quica’ maldoso. As fotos mostram tudo, ensinam tudo. Mas ninguem consegue algo similar.

Famoso pelo seu gosto e uso de Leicas (por falar nisso, ainda estou ‘a espera que alguem me ofereca uma M8), este fotografo re-cria dentro de qualquer fã de SLRs uma vontade de voltar ‘as rangefinders. ‘As origens diriam uns. Ao ver as fotos de HCB e’ facil alimentar a ideia romanceada do fotografo latente em todos nos, do uso simples e elegante de maquinas simples para obter fotos simples. As fotos querem-se simples.

Encontrei no Arte Photographica (ja’ adicionado ‘a minha lista de feeds!) referencia ‘a sua passagem por Evora. Se alguem estiver de passagem por Evora ate’ ao final de Julho, perder uma exposicao de HCB e’ passar ao lado de um dos pais da fotografia como nos a conhecemos hoje. Ninguem ate’ hoje perscrutou a alma com uma objectiva como Henri.

Um Silêncio Interior: os retratos de Henri Cartier-Bresson
Fórum Eugénio de Almeida, em Évora
Todos os dias, das 09h30 às 18h30. Entrada gratuita
Até 29 de Julho

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May 22 2007

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Bruno Afonso

Bikes at Night

Hoje vi esta bicicleta ‘a porta de um restaurante Tibetano. Amanha meto aqui as photos da comida tibetana!

Perl St Bike

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May 21 2007

Profile Image of Bruno Afonso
Bruno Afonso

Create Your Own Ongoing Time Capsule

Filed under trivia

There’s nothing better than finding a $20 in an old pair of jeans — unless it’s finding a photo and a note from yourself, years prior. There’s something about finding a small, unexpected gift to yourself that’s just wonderful.

Sera’ mesmo? Curtam isto. :-)

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May 21 2007

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Bruno Afonso

Afonsismo #7

Filed under Afonsismos

A inteligencia de uma mulher desejada e’ tao mais deliciosa quanto mais tempo demoramos a perceber quao inteligente ela foi.

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