If The Moon Was Only 1 Pixel
joshworth.com
joshworth.com
And then I touched my monitor and, turns out, it was just dust.
There's a metaphor there but I have no idea what it is.
See:
"The most important principle on HN, though, is to make thoughtful comments. Thoughtful in both senses: both civil and substantial.
The test for substance is a lot like it is for links. Does your comment teach us anything? There are two ways to do that: by pointing out some consideration that hadn't previously been mentioned, and by giving more information about the topic, perhaps from personal experience." http://ycombinator.com/newswelcome.html
its stars are specks
of dust
$(".essay").each(function(i){console.log($(this).text())});
to read the fun little text snippets. I like how it got fairly philosophical—everything eventually turns to philosophy if you are stranded out in space. Thanks for putting this together; it was a nice take on the perspective of our universe.Thanks!
There's so much emptiness, it's only natural to eventually crave all the content. (Fits the writing too)
Once you scroll for a sufficient period, maybe a little button with the spoilers? :)
For those curious, after scrolling 6,771 more maps, that is approximately where you would expect to find Proxima Centauri.
However, there are actually some other points of interest along the way (between Pluto and Proxima Centauri), including Eris, 90377 Sedna and Voyager 1, to name a (non-exhaustive) few.
If we redid it with the solar system (diamater: 10bn km) as a single pixel then it would be 3,800 pixels to Proxima Centauri, 94m pixels to cross our galaxy and 2bn pixels to get to Andromeda, the nearest "major" galaxy at 2m light years away.
If so, that is much closer than I thought. I had always held the notion that the nearest solar system was magnitudes greater distance than our own planets (although I admit the distance to pluto from here is pretty damn enormous relative to the distance to other planets in our system).
http://www.wolframalpha.com/input/?i=%28Distance+to+Proxima+...
In Standard English, this use of the subjunctive mood is optional, not required.
I saw a really good write-up about this before and wish I could find it :(
EDIT: This one's not it, but it's very similar: http://motivatedgrammar.wordpress.com/2011/11/07/descriptivi...
If I saw someone write "it is necessary that he goes" in a paper it would stick out as strange to me, likewise if I heard someone say "it is necessary that he go" it would sound overly formal and a bit stilted.
So really, you can use either and be understood perfectly well. It only seems to annoy prescriptivists, and I would say one has a moral obligation to annoy prescriptivists anyway.
And that's a cause I can really get behind.
Challenge accepted! (See above.)
At the lowest zoom level, one pixel is 280,000 bp (roughly the length of one or two genes, including noncoding segments). You can zoom all the way into the individual base pairs (a, c, t, and g).
There is a track below the chromosome cartoon (cartogram) that shows you the genes if you pull down on its label.
It was interesting along the way to verify Kepler's relationship between the orbital period and the distance. Saturn takes about 30 years to go around, and is about 30^(2/3) ~ 10 times the distance. Jupiter takes about 12 years to go around and is about 12^(2/3) ~ 5.2 the distance.
Standing by the plinth with the Earth and the Moon, looking back at the Sun, then forward to Mars, and not being able to see Jupiter really does give a true sense of the scale.
Not to diminish this effort, but getting out and walking the distances make a difference.
2. Obligatory question - how many working hours were just lost?
3. Why on earth would you use capital M for meters? I really hope I will not look really dumb in a minute, but I immediately knew something was wrong, but it actually took my quite some time to recognize it.
Citation for "lowercase m for meters": http://physics.nist.gov/Pubs/SP811/sec06.html
I bring this up simply because I've seen a few comments over the past few days to the tone of "imperial sucks" and "imperial is clearly inferior."
To me, I only see using imperial units as an advantage. As Americans, the metric system is already hammered into our heads in grammar school anyways. Some might see it as Americans being uninformed or accustomed to antiquated methods, but I see it as Americans being able to speak two languages (at least the Americans I'm most familiar with).
Out of genuine curiosity, what's the advantage from your point of view, other than being able to communicate to other people who use the same system, at the cost of not being understood by everyone else?
(What I heard in the UK during the supermarket transition to metric a decade ago: imperial uses fractions, which is a useful to grasp for learning children, etc. But I'm surely misquoting so don't worry about this argument)
I am asking because I only come across the imperial system when watching Mythbusters or reading a book about the Space Shuttle, or someone tells me their weight in stones, which always leaves me rather puzzled.
This is just out of curiosity, I'm not trying to work anyone up.
What other advantage, you ask? Well, I'd say that there is none. I was merely trying to convey that being fluent in both imperial and metric is better than being fluent in only metric. As long as it doesn't hurt me (which imperial doesn't) the more skill-sets I have, the better!
I hope you better see where I'm coming from now. You didn't work me up though, and I also didn't mean to work anyone up either. :)
The metric system is 10 based, which makes it trivial to measure and convert: 1000mm = 100cm = 1m. This becomes even more important when you are talking about volume or any ^3 dimension.
I have lived in the US for 15 years and even today, I'm unable to convert fl oz. to any kind of mass measure without getting a headache along the way.
Unit of length should be astronomical units (abbrev. au, formerly AU), the mean distance between earth and the sun. If talking about distances in stellar scale, it should be parsec ("parallax second"), the distance from which an 1 au object can be seen at 1 arc second apparent size (and sin x = x is assumed because x is small).
Unit of mass is usually solar masses. In some special cases earth masses or jupiter masses.
Unit of density is either number of atoms in m^3 or other big volume when talking about interstellar medium or kg/m^3 when talking about planets or stars.
Unit of time is usually measured in years.
When you use solar masses, years and astronomical units, Kepler's 3rd law is reduced to: (m1+m2)period^2 = semi-major-axis^3 and the gravitational constant G = 4 * pi^2 (and thus it's cancelled out from G(m1+m2) * P^2 = 4 * pi^2 * a^3).
I definitely would have liked to see the distance in astronomical units and a verbal description of the distance ie. (5 million kilometers, not 5000000 km). Humans are really bad at understanding big numbers, any means of helping to understand that would be useful.
The US "imperial" vs UK "imerial" is why during WW2 the Allies (USA, UK, France etc.) used metric. Cause there's only one cenimeter. (Very important when you're making bullets)./
A small cube of 1cm represents 1cm³, which is also 1mL which is also 1g of water.
So a cube just 10cm across contains 1000cm³, or exactly 1 Litre and weighs exactly 1kg (of water).
It's easy to grasps and visually/physically see the relationship between these fundamental units.
Relationships to other fundamental units is also greatly simplified: the Newton is the mount of force needed to accelerate 1kg to 1m/s²; the Joule is the amount of energy needed to move 1kg by 1m or moving 1A through 1Ω, ...
Not all units are so cleanly expressed in terms of other units, but, at least for the everyday ones, the kg, Litre and metre, the relationship is easy to understand.
To me, Imperial measurements are confusing. It's even worse considering how food recipes are described in terms of cups (a unit of volume) rather than weight.
Getting a cup of dry pasta is not going to give me the same amount of pasta depending on the shape of the pasta I'm trying to cook. Try getting a cup of spaghetti.
> the relationship between mass, volume and length is trivially easy to understand.
Imperial units also have a simple relationship between mass and volume. In the US, a pint's a pound the world around, and in the world around the US, a pint of water is a pound and a quarter, and in some of those places that rhymes.(One fluid ounce — either kind — of water weights approximately one ounce.)
Having been born and raised in the US, I have never heard this before.
Presumably you are referring to a pint of water?
(Then again we never learned pints anyway, so meh)
I always wondered if butter was the basis for standard units. There's something rather wonderful about that idea to me.
50 miles is a ton less syllables than 50 'kilometers' an inch is much easier to say than '2 centimetres'
What would immensely improve the metric system would be recognised, single-syllable slang words for every measurement unit. A lot of native-metric-english speakers try, they say 'mil' for millilitres, they say 'kays' for kilometres, but you're still left with either awkward decimal points or excessive syllables.
I am 'one point eight three metres' tall, or 'one hundred and eighty three centimetres'. Or I am 'six feet'. Guess which gets used most?
The curse of the metric is the endless tongue-twisters.
If I said a decimeter to any of my friends, they would have no idea what I was talking about.
You can say "1 meter 83", and people do.
> If I said a decimeter to any of my friends, they would have no idea what I was talking about.
Well, mine would - and any who didn't could easily figure it out. If you're willing to memorize all the random names the imperial units have, you can afford to remember "deci".
But seriously, I don't think I've ever heard of using M for meters.
Photopia (http://adamcadre.ac/if/photopia.html)
It's my hope that one soul, somewhere, will discover this today. That would make me happy. :)
Edit: this episode! https://www.youtube.com/watch?v=gRIVwGwdxI8#t=250
Edit2: nope, this one (guess he liked this trick lol) https://www.youtube.com/watch?v=A_OWnlS56rE#t=325 Pluto is only 100 meters away, but Alpha Centauri is 700 km away!
The sun was the size of a soccer ball.
You're probably confusing this with the rule surrounding verifiable facts (ie, "I asked John if he was happy").
Subjunctive forms of verbs are typically used to
express various states of unreality such as wish,
emotion, possibility, judgment, opinion, necessity,
or action that has not yet occurred.
The action has occurred, it is not an unreality. It seems to me that using the subjunctive would be inappropriate.And yes, perhaps using the present tense would be more appropriate. Certainly I would have used something like:
The solar system plotted on a scale where the Moon is one pixel.
My comment still stands - the subjunctive is inappropriate. Saying it should be still something else does not make that less true.<Shrug /> It's the interwebs, people will write what they like, and declare that nothing is right, and nothing is wrong, it's all OK. In that case telling someone to use the subjunctive seems doubly inappropriate.
Some photos here: http://io9.com/5882220/worlds-largest-scale-model-of-the-sol...
Even without the horrible "zoom in", the size loses meaning and I can't tell how big it is, because humans think in logarithmic scales. I can't really estimate the difference in size by glancing at the number of zeros written out for 10^27 or 10^80 (maybe unless they were above and below each other, and then I would say it's between 2 and 3 times difference in orders of magnitude... again logarithmic thinking!). One is the number of atoms in the human body, the other is the number of atoms in the observable universe, so the difference really can't be appreciated by glancing at the number of zeros.
Given me logarithmic scales for comparing and estimating sizes any day.
1 thousand seconds is 16.7 minutes 1 million seconds is 11.6 days 1 billion seconds is 31.6 years
In my mind the difference between a million and a billion seemed somewhat tangible before hearing this. With that comparison, a billion seems so much more.
Another way to think about these scaling ratios is to realize that a billion is a thousand times larger than a million.
Billion = 10^9
Million = 10^6
9 - 6 = 3. 10^3 = 1000
Thankfully, the solution was easy:
Open Chrome Inspector Console:
$('.essay').css({ left: '20px', marginBottom: '15px', maxWidth: '600px', position: 'relative' });
$('#bigspace').css('left','inherit');
Abstraction is where our imagination lights up, where we make art and fall in love and build things. These empty spaces, it's where we find that these brains that evolved to escape Jaguars and find food, are actually pretty amazing in themselves.
http://www.phrenopolis.com/perspective/solarsystem/ This page has been kicking around for ages, not sure how long though.
http://www.scalesolarsystem.66ghz.com/ More recent. This one is vertical (so whiners can scroll with wheel, although all these pages are scrollable in wheel-click mode)
One comment: If you're using km for the distance units, you might as well stick with it (metric) for all the other examples like 75 mi/hr and 475 ft to be more consistent. Better yet, an option to switch the units between imperial and metric would be pretty cool.
It seems many other places in central Europe have similar scale models of the solar system, though I’m not sure how common those are in North America.
"When pressing the right arrow key, the digits at the bottom are spinning really fast apart from the most significant numbers at the front and the 3rd digit from the right which, curiously, slowly counts backwards without missing any digit"
http://florin.myip.org/blog/i-had-no-idea-just-how-big-solar...
My favourite quote: "... once nothingness becomes tangible, it ceases to exist"
Earth and moon.
Walk away a thousand yards (1km) and place a 30ft (10m) high pumpkin.
That's how big the sun is and how far it is from us.
* aprox scale
Thank you! :)
Edit: doesn't seem to work on the linked page
And why the hell don't they enable "tab to all controls" by default?
especially because it's too easy to make it when scrolling up
However I just used the navigation icons on the top.
We also tend to think of our planets in order from left to right from the sun.
If this was about ocean depth, vertical scrolling might be more analogous.
But its all subjective of course.