Ravensburg (Baden-Württemberg)

This map shows the percent of residents of each state who own passports.

This is what I thought about 98.7 until I started listening to it daily a few weeks ago.  The other day I heard the same song twice, once coming home and once coming to school. I live TEN MINUTES away.  Although the lack of nuance is quite dissatisfying at times, it's still miles better than most of the other stations.

Day 17: A Song You Hear Often on the Radio.

Well I’m weird because i almost never listen to the radio, first of all, and second of all, I listen to 98.7 which is like 60s, 70s, 80s music and I’ve never heard the same song played twice.  so.  Yeah.

The gif animation of folding the net of the tesseract(8-cell). ;-)

There are many kinds of the net of the tesseract.

http://hyrodium.tumblr.com/post/67134693288/hyrodiums-photostream-on-flickr-there-are-many

Having been lucky enough to travel on numerous roads like this last summer, I'm pretty sure I remember being genuinely and irrationally afraid of this exact thing happening. I have no clue why.

i feel like if at some point in your life you feel the need to say “a sheaf of e infinity rings on a moduli stack”, maybe something went wrong along the way

Vic Elford Porsche Targa Florio 1969

P-61 Black Widow cockpit.

how do you feel about tau

τ is cool, but really not practical for me. 

And I honestly do not feel like the τ vs π argument makes any sense at all. The two numbers are both technically correct and are just different ways of relating the circumference of a circle to two related, but DIFFERENT aspects of its geometry. 

As far as learning goes, τ does make a lot more intuitive sense than π and I will definitely give it that. It most certainly does make sense to relate the radius of a circle to its circumference! 

But the idea that π is wrong and that τ is somehow “more correct” is a weird logical fallacy:

There is a relation between the diameter of a circle and the circumference called π

There is a relation between the radius of a circle called τ

We use the measurements utilizing radii more than we use diameters

Therefore π is wrong. 

???? This argument doesn’t make sense. They’re two different relationships based on two different things. It’s like saying Fahrenheit is wrong because Celsius is easier to use.    

From the stance of someone in astrophysics, I really don’t think making τ the standard is practical at all. I have issues with it because τ is used as a symbol for many many MANY other things in my field. We use τ to represent time constants, optical depths, and torque and I feel like making the switch would be incredibly difficult and confusing because we use π in some of those. It’d make my life (and a bunch of other peoples’ lives) a lot more difficult to make the big shift, especially since π is not technically incorrect given its definition.

I say that both of them are good. I’m in camp “using π” because it’s most practical for me, but I don’t care if someone else uses τ because it works for them! 

Ok I got distracted but anyways yes this is my opinion