diff --git a/cphysics.c b/cphysics.c
deleted file mode 100644
index 4fe1f84..0000000
--- a/cphysics.c
+++ /dev/null
@@ -1,9 +0,0 @@
-#include "cphysics.h"
-#include "objects.h"
-
-void gravity(universe_t* univ){
-
-}
-void magnetism(universe_t* univ){
-
-}
diff --git a/main.c b/main.c
index f575a3e..796c207 100644
--- a/main.c
+++ b/main.c
@@ -2,6 +2,7 @@
 
 #include "consts.h"
 #include "mechanics.h"
+#include "magnetism.h"
 #include <bits/time.h>
 #include <math.h>
 #include <pthread.h>
@@ -31,6 +32,7 @@ void *physics(void *args) {
   while (true) {
     clock_gettime(CLOCK_MONOTONIC, &ct);
     mechanics(uni);
+    magnetism(uni);
     ot = ct;
     long long elapsed = timespec_diff_ns(ct, ot);
     long long remaining = TIMESTEP / simx - elapsed;
diff --git a/objects.h b/objects.h
index d194f5c..95ddd09 100644
--- a/objects.h
+++ b/objects.h
@@ -7,6 +7,7 @@ typedef struct {
   float radius;
   Vector2 position;
   Vector2 speed;
+  float charge;
 } mass_body_t;
 
 typedef struct universe {