Arduino code double slit experiment

//Adjusted from Sweep example by Stijn van der Lippe

#include <Servo.h>

Servo myservo;                      // create servo object to control a servo
                                    // twelve servo objects can be created on most boards

int pos = 90;                       // variable to store the servo position, starts at 90 degrees

void setup() {
  myservo.attach(9);                // attaches the servo on pin 9 to the servo object
}

void loop() {
  myservo.write(pos);               // tell servo to go to position in variable 'pos'
  delay(2);                         // waits 2ms for the servo to reach the position
  pos += 5;                          // set position variable forward 5 degrees
  myservo.write(pos);               // tell servo to go to position in variable 'pos'
  delay(2);                         // waits 2ms for the servo to reach the position
  pos -= 5;                          // set position variable back 5 degrees
  }
}