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[[CDB|Main]] / [[:Category:Wurm universe|Wurm Universe]] / ''This is a series of articles on the "physics and astronomy" of the universe of Wurm Online, trying to describe the structure, dynamics and “laws of nature” of our in-game world.'{{PAGENAME}}'''

'''This page provides a rundown of the physics of the Wurm world. Below are sections individually designated to the various elements of these physics.''' == Quick References == === Measurements === * 1 tile = 4 meter x 4 meter square. * 250 tiles = 1 kilometer * 10 dirts (dropped or dug) = 1 meter of slope === Time === * 1 RL hour = 8 Wurm hours * 1 RL day = 8 Wurm days * 1 Wurm day = 3 real hours * 1 Wurm hour = 7.5 real minutes (0.125 real hours) * 1 Wurm year = 336 Wurm days = 42 real days == Distance, Slopes, and Height == * The most basic unit of standard measurement designated to measuring distance in Wurm is defined by the size of a “tile”. Tiles are the equally sized squares that the landscape of Wurm Online is entirely composed of. In the 3D world of Wurm a tile can be either flat or inclined, so that one or more of its corners can be higher or lower than the others.

In all our calculations we used the following fundamental information, given * A relatively flat tile represents what in the Wurmpedia (http://www.wurmpedia.com/index.php/Tile):  '''“A tile is real-life would be a 4 meter by 4 meter square”square. Subsequently, 250 tiles then equals what would be, in real-life, 1 kilometer.'''

How * Exact linear distance can we measure distances and heights in Wurm? Originally we tried to use easily be gleaned by using a [[spyglass]], because it displays as this tool will display the exact distance between the observer user and an any distant object pointed to by the targeted within its viewing crosshairs. See picture for example:

Using a spyglass is sufficient to verify the basic unit of measurement (1 tile = 4m x 4m) and to measure linear distances within a reasonable accuracy. However, when it comes to measuring heights it turned out that a and slopes, the spyglass is not quite accurate enough to always yield reliable results. Thus we need to use a more precise methodTriangulation is thus recommended in such situations: triangulation! This method uses basic trigonometric functions to determine the height of an object.

To use triangulation to determine the height (H ) of an object, you must first define a reference point. To do so, take a screenshot (as shown in the example) and measure the angle (α ) between the ground and the top of the object, as seen from the reference point. (As we have no means to measure angles in-game, we need to use a graphics program to determine the angle on the screenshot.) Additionally you need to measure the horizontal distance, which you obtain by counting the number of tiles T (remember: one tile corresponds to a distance of 4 meters). You then get the height H by using this formula:

{|class="wikitable"! style="font-weight: bold; text-align:leftcenter;" width="200"| Object! style="font-weight: bold; text-align: center;" width="100" | Height (m)|-| Player character| style="text-align: right;" | 1.7

|Player characterHouse wall (one level)|1.7style="text-align: right;" | 3 *

|House wall (1 floor)Standard mine tunnel| style="text-align: right;" | 3.0 *

| style="text-align: right;" | 5.6

| style="text-align: right;" | 25

| style="text-align: right;" | 34

| style="text-align: right;" | 40|}''(*) Note: floors are 0.3m over walls (example standing on 2nd floor is at 3m + 0.3m = 3.3m)

''*) Note: the ground floor of a house has a height of 3.3 m'' Finally, talking about measuring heights, we must look at another basic unit of measurement used in the Wurm universeworld: “dirts”. Whenever we see sloped tiles defining the 3D landscape , the elevation of slopes is given in terms of the amount of “dirts dropped”" dropped. When terraforming the land you use a shovel to dig or drop dirt - you add or subtract one “unit of dirt” with each action of the shovel.

* Using the method of triangulation described above , we can find out how these “units of dirt” correspond to metric units. By dropping dirt , we make elevated platforms of various heights, thus creating different slopes. We then position an observer in a pit, so that the eye level is slightly above the ground, and take screenshots:

We obtain This table shows the following table (angle for slopes spanning a single tile):

{|class="wikitable"! style="font-weight: bold; text-align:leftcenter;" width="100"| Slope! style="font-weight: bold; text-align: center;" width="100" | Angle! style="font-weight: bold; text-align: center;" width="100" | Elevation (m)

| style="text-align: right;" |10| style="text-align: right;" |14.0| style="text-align: right;" |1.0

| style="text-align: right;" |20| style="text-align: right;" |26.6| style="text-align: right;" |2.0

| style="text-align: right;" |30| style="text-align: right;" |36.9| style="text-align: right;" |3.0

| style="text-align: right;" |40| style="text-align: right;" |45.0| style="text-align: right;" |4.0

| style="text-align: right;" |50| style="text-align: right;" |51.3| style="text-align: right;" |5.0

| style="text-align: right;" |60| style="text-align: right;" |56.3| style="text-align: right;" |6.0

| style="text-align: right;" |70| style="text-align: right;" |60.3| style="text-align: right;" |7.0

| style="text-align: right;" |80| style="text-align: right;" |63.4| style="text-align: right;" |8.0

| style="text-align: right;" |90| style="text-align: right;" |66.0| style="text-align: right;" |9.0

| style="text-align: right;" |100| style="text-align: right;" |68.2| style="text-align: right;" |10.0

| style="text-align: right;" |150| style="text-align: right;" |75.1| style="text-align: right;" |15.0

| style="text-align: right;" |200| style="text-align: right;" |78.7| style="text-align: right;" |20.0

Using this method , it is also possible to determine the height of a player character with sufficient accuracy:

== Volume == Volume is a measurement of how much space an item takes up. This measure is often not displayed in----game. Bulk bins are the one exception.  More Notes on Volume in Wurm: * Liquids happen to be 1kg to 1L (weight to volume), and because of this, are often referenced in liters (L). Many solid items have different kg to L relationships. Examples:** A small bucket can hold 12 L. A full bucket of water contains 12 L of water weighting 12 kg. ** A pottery bowl can hold 9 L and weights 0.50 kg. A fillet of fish is 0.20 L and weights 0.30 kg. Thus, a pottery bowl can hold 45 fillets (9 / 0.2 = 45) and will weight 14 kg (13.50 kg fillet, 0.50 kg bowl).

== Part 2: Time* Volume puts limits on how much of something can fit in a container. All containers themselves consume slightly more volume then they hold. Hypothetically then, Date players can carry infinite volume and Calendar ==containers can hold infinite weight.

One * You can calculate how many of an item will fit in a container by dividing the first things we notice when observing the world of Wurm Online is the rapid succession of day and night: a full day-night cycle only lasts 3 hours of our real-world time. Thus, we conclude that container's volume by the planet Wurm rotates rapidly around its axis: 8 times faster than our Earthstored item's volume. (At this point, we will not discuss See the physical implications of this observation, nor will we speculate on the possible reasons [[Container]] page for the rapid planetary rotation. This will probably be done in one a list of the following parts of this seriescontainers and volume capacities.)

'''1 real day = 8 Wurm days''' or: '''1 Wurm day = 3 real hours'''Time, Seasons ==

(By “day” we mean one full planetary rotation, i.e. a complete “day-night cycle”.)Just like in our real * The world, the rotation of our planet determines how we measure time. In the Wurm universe, instead of saying that a full planetary rotation lasts 3 hours, it was agreed to split rotates rapidly around its axis: approximately 8 times faster than the dayreal-night cycle into 24 time units, called “Wurm hours”life Earth. (Bear in mind that this is only an arbitrary convention – we could also have agreed on As a Wurm rotation having 12 or 30 “Wurm hours”. By choosing result, the number 24 we just made it easier for us, because now there are as many “Wurm hours” in a “Wurm day” as there following statements are real hours in an Earth day.)Once we made that definition, it is clear thattrue:

'''1 real hour day = 8 Wurm hoursdays''' or: AND '''1 Wurm hour day = 0.125 3 real hours (7.5 real minutes)'''

It must be noted that this definition has caused a common misunderstanding. On the forums (and even on Wurmpedia) you can sometimes read that “Wurm time passes '''1 real hour = 8 times faster than real time”. Wurm hours'''This is not true!AND ''' Time in the 1 Wurm universe is the same as time in our real world – we only use a unit of time measurement which is 8 times smaller than in hour = 0.125 real life! hours (It is the same effect as if you defined a new unit of length – say: “1 Wurm meter”, corresponding to 25 7.5 real centimeters - and you would say that a 1-meter ruler has a length of “4 Wurm meters”. This doesn’t make the ruler 4 times longer than it was before!minutes)'''

You can easily * For more help with time, see that Wurm time passes at the same rate as real time by watching the speed indicator below the GUI status windowfollowing '''Game Time Conversion Table''':

[[File{| class="wikitable"! colspan="6" style="font-weight: bold;" | Real! colspan="6" style="font-weight: bold;" | Wurm|-| style="font-weight: bold; text-align: center;" width="100" | Minutes| style="font-weight: bold; text-align: center;" width="100" | Hours| style="font-weight: bold; text-align: center;" width="100" | Days| style="font-weight: bold; text-align: center;" width="100" | Weeks| style="font-weight: bold; text-align: center;" width="100" | Months| style="font-weight: bold; text-align: center;" width="100" | Years| style="font-weight: bold; text-align: center;" width="100" | Minutes| style="font-weight: bold; text-align: center;" width="100" | Hours| style="font-weight: bold; text-align: center;" width="100" | Days| style="font-weight: bold; text-align: center;" width="100" | Weeks| style="font-weight: bold; text-align: center;" width="100" | Months| style="font-weight: bold; text-align: center;" width="100" | Years|-| style="text-align: right; font-weight: bold;" | 1.00| style="text-align: right;" | 0.02| style="text-align: right;" | 0.00| style="text-align: right;" | 0.00| style="text-align: right;" | 0.00| style="text-align: right;" | 0.00| style="text-align: right;" | 8.00| style="text-align: right;" | 0.13| style="text-align: right;" | 0.01| style="text-align: right;" | 0.00| style="text-align: right;" | 0.00| style="text-align: right;" | 0.00|-| style="text-align: right;" | 60.00| style="text-align: right; font-weight: bold;" | 1.00| style="text-align: right;" | 0.04| style="text-align: right;" | 0.01| style="text-align: right;" | 0.00| style="text-align: right;" | 0.00| style="text-align: right;" | 480.00| style="text-align: right;" | 8.00| style="text-align: right;" | 0.33| style="text-align: right;" | 0.05| style="text-align: right;" | 0.01| style="text-align: right;" | 0.00|-| style="text-align: right;" | 1,440.00| style="text-align: right;" | 24.00| style="text-align: right; font-weight: bold;" | 1.00| style="text-align: right;" | 0.14| style="text-align: right;" | 0.03| style="text-align: right;" | 0.00| style="text-align: right;" | 11,520.00| style="text-align: right;" | 192.00| style="text-align: right;" | 8.00| style="text-align: right;" | 1.14| style="text-align: right;" | 0.25| style="text-align: right;" | 0.02|-| style="text-align: right;" | 10,080.00| style="text-align: right;" | 168.00| style="text-align: right;" | 7.00| style="text-align: right; font-weight: bold;" | 1.00| style="text-align: right;" | 0.23| style="text-align: right;" | 0.02| style="text-align: right;" | 80,640.00| style="text-align: right;" | 1,344.00| style="text-align: right;" | 56.00| style="text-align: right;" | 8.00| style="text-align: right;" | 1.92| style="text-align: right;" | 0.16|-| style="text-align: right;" | 43,829.10| style="text-align: right;" | 730.49| style="text-align: right;" | 30.44| style="text-align: right;" | 4.35| style="text-align: right; font-weight: bold;" | 1.00| style="text-align: right;" | 0.08| style="text-align: right;" | 350,632.80| style="text-align: right;" | 5,843.88| style="text-align: right;" | 243.50| style="text-align: right;" | 34.79| style="text-align: right;" | 8.76| style="text-align: right;" | 0.73|-| style="text-align: right;" | 525,949.00| style="text-align: right;" | 8,765.82| style="text-align: right;" | 365.24| style="text-align: right;" | 52.18| style="text-align: right;" | 12.00| style="text-align: right; font-weight: bold;" | 1.00| style="text-align: right;" | 4,207,592.00| style="text-align: right;" | 70,126.53| style="text-align: right;" | 2,921.94| style="text-align: right;" | 417.42| style="text-align: right;" | 104.40| style="text-align: right;" | 8.70|-| style="text-align: right;" | 0.13| style="text-align: right;" | 0.00| style="text-align: right;" | 0.00| style="text-align: right;" | 0.00| style="text-align: right;" | 0.00| style="text-align: right;" | 0.00| style="text-align: right; font-weight: bold;" | 1.00| style="text-align: right;" | 0.02| style="text-align: right;" | 0.00| style="text-align: right;" | 0.00| style="text-align: right;" | 0.00| style="text-align: right;" | 0.00|-| style="text-align: right;" | 7.50| style="text-align: right;" | 0.13| style="text-align: right;" | 0.01| style="text-align: right;" | 0.00| style="text-align: right;" | 0.00| style="text-align: right;" | 0.00| style="text-align: right;" | 60.00| style="text-align: right; font-weight: bold;" | 1.00| style="text-align: right;" | 0.04| style="text-align: right;" | 0.01| style="text-align: right;" | 0.00| style="text-align: right;" | 0.00|-| style="text-align: right;" | 180.00| style="text-align: right;" | 3.00| style="text-align: right;" | 0.13| style="text-align: right;" | 0.02| style="text-align: right;" | 0.00| style="text-align: right;" | 0.00| style="text-align: right;" | 1,440.00| style="text-align: right;" | 24.00| style="text-align: right; font-weight: bold;" | 1.00| style="text-align: right;" | 0.14| style="text-align: right;" | 0.04| style="text-align: right;" | 0.00|-| style="text-align: right;" | 1,260.00| style="text-align: right;" | 21.00| style="text-align: right;" | 0.88| style="text-align: right;" | 0.13| style="text-align: right;" | 0.03| style="text-align: right;" | 0.00| style="text-align:Speed_Indicatorright;" | 10,080.png]]00| style="text-align: right;" | 168.00Let your character run a while and count the number of tiles you cross in a given length of time| style="text-align: right;" | 7. Considering that 00| style="text-align: right; font-weight: bold;" | 1 tile corresponds to .00| style="text-align: right;" | 0.25| style="text-align: right;" | 0.02|-| style="text-align: right;" | 5,040.00| style="text-align: right;" | 84.00| style="text-align: right;" | 3.50| style="text-align: right;" | 0.50| style="text-align: right;" | 0.11| style="text-align: right;" | 0.01| style="text-align: right;" | 40,320.00| style="text-align: right;" | 672.00| style="text-align: right;" | 28.00| style="text-align: right;" | 4 meters (see part .00| style="text-align: right; font-weight: bold;" | 1.00| style="text-align: right;" | 0.08|-| style="text-align: right;" | 60,480.00| style="text-align: right;" | 1,008.00| style="text-align: right;" | 42.00| style="text-align: right;" | 6.00| style="text-align: right;" | 1.37| style="text-align: right;" | 0.11| style="text-align: right;" | 483,840.00| style="text-align: right;" | 8,064.00| style="text-align: right;" | 336.00| style="text-align: right;" | 48.00| style="text-align: right;" | 12.00| style="text-align: right; font-weight: bold;" | 1 of this series) you will easily see that the speed indicated in the GUI uses “real time” instead of some kind of pseudo “accelerated time”.00|}

Now that we have defined the “Wurm day” and the “Wurm hour”, we * The Wurm world also observe that the visual appearance of Wurm’s nature changes as time passes. Just like in real life, we experience experiences 4 different seasons, called “winter”, “spring”, “summer”, and “autumn”. These seasons reoccur regularly after during 336 Wurm days. Thus we can define the “Wurm year”As such:

* This is a convenient number, because 336 = 7 x 4 x 12, allowing us to split a Wurm year into 12 months (called “starfalls”), each with 4 weeks of 7 days.As such:

*1. starfall''Please note: Diamond*The actual season for harvest can be -/+ 2weeks. starfall: Saw*3. starfall: Digging*4Also any day (and any minute in that day) in that week. starfall: Leaf*5. starfall: Bear*6. starfall: Snake*7. starfall: White shark*8. starfall: Fire*9. starfall: Raven*10. starfall: Dancer*11. starfall: Omen*12. starfall: Silence''

Like our real world, a Also see: [[Harvest calendar]] for more information.  ===Weekdays (7)=== # Day of the Ant# Day of Luck# Day of the Wurm# Day of Wrath# Day of Tears# Day of Sleep# Day of Awakening ===Seasons=== The Wurm year has 4 seasons:

 [[File:Wurm Calendar 09wurmcalendar.pngJPG]]