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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}}'''

The most basic unit '''This page provides a rundown of measurement is defined by the size physics of a “tile”the Wurm world. Tiles Below are sections individually designated to the equally sized squares that the landscape of Wurm Online is entirely composed various elements ofthese physics. In the 3D world of Wurm a ''' == Quick References == === Measurements === * 1 tile can be either flat or inclined, so that one or more of its corners can be higher or lower than the others= 4 meter x 4 meter square. In all our calculations we used the following fundamental information, given in the Wurmpedia * 250 tiles = 1 kilometer * 10 dirts (http://www.wurmpedia.com/index.php/Tiledropped 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

'''“A tile is a 4 meter by 4 meter square”* 1 Wurm hour = 7.'''5 real minutes (0.125 real hours)

In-game, 1km * 1 Wurm year = '''''approx.''''' 250 tiles.336 Wurm days = 42 real days

How can we measure distances == Distance, Slopes, and heights Height == * The standard measurement designated to measuring distance in Wurm? Originally we tried to use is the “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. * A relatively flat tile represents what in real-life would be a 4 meter by 4 meter square. Subsequently, 250 tiles then equals what would be, in real-life, 1 kilometer. * Exact linear distance can 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

|House wall (1 floorone level)| style="text-align: right;" | 3.0 *|-|Standard mine tunnel| style="text-align: right;" | 3

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

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

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

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

* 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.

== Part 2More Notes on Volume in Wurm: Time, Date and Calendar ==

One * Liquids happen to be 1kg to 1L (weight to volume), and because of the first things we notice when observing the world 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 Wurm Online is the rapid succession water contains 12 L of day water weighting 12 kg. ** A pottery bowl can hold 9 L and night: a full day-night cycle only lasts 3 hours weights 0.50 kg. A fillet of our real-world timefish is 0.20 L and weights 0.30 kg. Thus, we conclude that the planet Wurm rotates rapidly around its axis: 8 times faster than our Eartha pottery bowl can hold 45 fillets (9 / 0. 2 = 45) and will weight 14 kg (At this point13.50 kg fillet, we will not discuss the physical implications of this observation, nor will we speculate on the possible reasons for the rapid planetary rotation0. This will probably be done in one of the following parts of this series50 kg bowl).)

(By “day” we mean one full planetary rotation, i.e. a complete “day-night cycle”.)Just like in our real world, the rotation of our planet determines * You can calculate how we measure time. In the Wurm universe, instead many of saying that an item will fit in a full planetary rotation lasts 3 hours, it was agreed to split container by dividing the day-night cycle into 24 time units, called “Wurm hours”. (Bear in mind that this is only an arbitrary convention – we could also have agreed on a Wurm rotation having 12 or 30 “Wurm hours”container's volume by the stored item's volume. By choosing See the number 24 we just made it easier [[Container]] page for us, because now there are as many “Wurm hours” in a “Wurm day” as there are real hours in an Earth daylist of containers and volume capacities.)Once we made that definition, it is clear that

'''1 real hour = 8 Wurm hours''' or: '''1 Wurm hour = 0.125 real hours (7.5 real minutes)'''Time, Seasons ==

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 * The world of Wurm rotates rapidly around its axis: approximately 8 times faster than real time”. '''This is not true!''' Time in the 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 real -life! (It is the same effect as if you defined Earth. As a new unit of length – say: “1 Wurm meter”result, corresponding to 25 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!)following statements are true:

You can easily see that '''1 real day = 8 Wurm days''' AND '''1 Wurm day = 3 real hours'''  '''1 real hour = 8 Wurm hours''' AND '''1 Wurm time passes at the same rate as hour = 0.125 real hours (7.5 real minutes)''' * For more help with time by watching the speed indicator below , see the GUI status windowfollowing '''Game Time Conversion Table''':

[[File{| class="wikitable"! colspan="6" style="font-weight:Speed_Indicatorbold;" | 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: 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;" | 0.25| 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;" | 4.00| 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.png]]00|}

If we take a closer look at the 3 hours defining a full “Wurm day”, we find that Sol (the sun of our planet Wurm) rises at '''04:30''' (Wurm time) and sets at '''19:30''' (* The Wurm time) each day. That’s why the time between about 20:00 and 04:00 is dark (“night”), and the time between 04:00 and 20:00 is bright (“day”). Now that we have defined the “Wurm day” and the “Wurm hour”, we 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:

*===The 12 Starfalls and Associated Harvest Seasons=== # Diamonds Starfall - ''[[Pinenut]] (week 1)''# Saw Starfall - ''No seasons''# Digging Starfall - ''No seasons''# Leaf Starfall - [[Oleander]] (week 2)'', ''[[Camellia]] (week 4), # Bear starfall - [[Lavender flowers]] (week 2), [[Rose flowers]] (week 3), [[Maple]] (week 4)''# Snake starfall - ''[[Acorns]] (week 2)''# White Shark starfall - ''[[Cherry]] (week 1. day: Day of the Ant)''*# Fire Starfall - ''[[Olive]] (week 1), ''[[Blueberries]] (week 2. day: Day of Luck)'', [[Hops]] (week 3)'', [[Orange]] (week 4)''*# Raven starfall - ''[[Grape]] (week 1), ''[[Lemon]] (week 2), [[Apple]] (week 3. day: Day of the Wurm)'', ''[[Chestnuts]] season (week 4)''*# Dancer Starfall - ''[[Raspberries]] season (week 1)'', ''[[Walnuts]] (week 2), [[Hazelnuts]] (week 3)'', ''[[Lingonberries]] season (week 4. day: Day of Wrath)''# Omen Starfall - ''No seasons''# Silent Starfall - ''No seasons'' *5''Please note: The actual season for harvest can be -/+ 2 weeks. Also any day: Day of Tears*6. (and any minute in that day: Day of Sleep*7) in that week. day: Day of Awakening''

The 12 starfalls are calledAlso see:[[Harvest calendar]] for more information.

Like our real world, a ===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]]

== Part Three: Volume Weather/Meteorology==

Volume is Having 4 seasons (as noted above) means a measurement lot of how much space an item takes upweather changes. This measure There is often not displayed in-gameno patterns to the weather other than snow is only during winter. Bulk bins are Wind is also unpredictable but seems to follow the one exceptionsame direction on multiple servers. The time span for wind changes also varies.

* Liquids happen to be 1kg to 1L (weight to volume)'''[[Rain]]''' does not impact the water level, and because of this, are often referenced but can result in liters (L)rainbows. Many sold items have different kg to L relationships. Examples:* With [[Sorcery]], [[rain]] can be summoned using the Lightning spell:*Burn times of outdoor furnaces are reduced when it rains, but the exact amount is unknown.* A small bucket '''Lightning''' can hold 12 L. strike during rain and also has unique effects if a player is struck by it::* The following message appears in the player's event tab: ''YOU ARE HIT BY LIGHTNING! OUCH! A full bucket of water containers 12 L of water weighting 12 kgstrange dizziness runs through your head, eventually sharpening your senses. '':** A pottery bowl can hold 9 L and weights Mind speed increases drastically (3.0+), but all equipped armor/weapons take 20 damage.50 kg. A filet :* The chance of fish getting hit is 0very low.20 L and weights ::*0.30 kg. Thus000024% chance on 2k servers (Deliverance, Exodus, Pristine, a pottery bowl can hold 45 filets (9 / Release)::*0.2 = 45000006% chance on 4k servers (Independence) and will weight 14 kg (13.50 kg filet, ::*0.50 kg bowl0000015% chance on 8k servers (Xanadu).

* Volume puts limits on how much can fit '''Snow''' changes the visual terrain to white. Its main purpose is to make [[snowball]]s to throw or use in a container. All containers themselves consume slightly more volume then they hold. Hypothetically players can carry infinite volume and containers can hold infinite weight[[larder]] to keep food from decaying as fast.

* You can calculate how many of an item will fit in a container by dividing the container's volume ''[[Fog]]''' was rumored to be predicted by the stored item'[[fog spider]]s volume, but they do spawn during this time. See the [[ContainerFog]] page for a list of containers and volume capacitieslevels, unlike wind, is specific to each server. *'''Day/Night''' only affects visual brightness, not potential weather effects. [[Category:Wurm universe]]