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+---
+author: Alvie Rahman
+date: \today
+title: Applied Technology
+tags: [ uni university_of_sussex applied_technology ]
+---
+
+<details>
+<summary>
+
+# talking to der
+
+</summary>
+```
+yes
+
+this guy looks familiar
+
+i think i've seen him at US before
+
+or maybe brighton uni
+
+why don't they just do things in metres
+
+
+
+        ---------   /----------\
+        |       |  = minecraft? |
+        |       |   \__________/
+        |       |
+    -----------------
+    |   |       |   |
+    |   |       |   |
+    |   |       |   |
+    |   |       |   |
+    |   |       |   |
+    |---|       |---|
+    |   |       |   |
+    -----------------
+        |   |   |
+        |   |   |
+        |   |   |
+ --     |   |   |
+||||    |   |   |
+ ||     |---|---|
+        _________
+
+why is engine so cold icy engine :cold_face: 
+
+eliot dinner on head?
+
+:nauseated: :face_vomitting:
+
+:der_pac:
+
+:alv.cx:
+
+:fortnitechug:
+
+:rowwiep:
+
+:twinightcreep0:
+
+:zalmon:
+
+:poo_eater:
+
+:snappy_gator36:
+
+:lefbt:
+
+:daniel:
+
+:jrbignon:
+
+:xenethar:
+
+:choccho:
+
+:tirion_lewis:
+
+:benfh003:
+
+:chickenninja95:
+
+:@everyone:
+
+:@everyone: :@everyone: :@everyone: :@everyone: :@everyone: :@everyone: :@everyone: :@everyone: :@everyone: :@everyone:
+
+:@Sergeant Sploinko vc:
+
+
+
+
+
+                               
+                               
+      _______________          
+      |             |          
+      |   _______   |          
+      |   |     |   |          
+      |   |_____|   |          
+      |        _____|          
+      |    |\  \               
+      |    | \  \              
+      |    |  \  \             
+      |    |   \  \            
+      |    |    \  \           
+      |____|     \__\ oblox
+                               
+                               
+
+vin i am so hungry
+```
+
+</details>
+
+# Gears
+
+- pinion in gear pair is small one
+- there are two important stresses in gears: bending and contact stresses
+
+$$\sigma = \frac{W_t}{K_vFmY}$$
+
+where $K_v = \frac{6.1}{6.1+V}$, $W_t = \frac P V$ is transmistted load, $F$ is face width, $m$ is
+module, $Y$ is Lewis factor
+
+where $V$ is pitch line velocity
+
+## Gear Trains
+
+A gear train is a collection of two or more gears.
+
+This is used to go beyond the typical limit of two meshing gears (~10:1).
+
+### Simple Gear Train
+
+The train ratio of a simple gear train is always $\frac{N_{input}}{N_{output}}$.
+
+An idler gear may be used to change rotation of the output shaft.
+
+### Compound Gear Trains
+
+Having parallel arrangements leads to the intermediate gears not being cancelled out.
+
+A general formula is
+
+$$m_y = \frac{\Pi N_{driver}}{\Pi N_{driven}}$$
+
+
+# Belts
+
+flexible and quiet but vulnerable to environmental conditions
+
+