diff --git a/Abgabe_4/ICG_Hausaufgabe_4.pdf b/Abgabe_4/ICG_Hausaufgabe_4.pdf
new file mode 100644
index 0000000..b45a08c
Binary files /dev/null and b/Abgabe_4/ICG_Hausaufgabe_4.pdf differ
diff --git a/Abgabe_4/lightTODOs/common/objects3D.js b/Abgabe_4/lightTODOs/common/objects3D.js
index 8bc2300..7e96b9b 100644
--- a/Abgabe_4/lightTODOs/common/objects3D.js
+++ b/Abgabe_4/lightTODOs/common/objects3D.js
@@ -74,7 +74,7 @@ class Object3D {
 	}
 }
 
-asd;
+
 class Island extends Object3D {
 	constructor() {
 		// DONE: Setze Material für Insel
diff --git a/Abgabe_4/lightTODOs/index.html b/Abgabe_4/lightTODOs/index.html
index 950397b..83db0bb 100644
--- a/Abgabe_4/lightTODOs/index.html
+++ b/Abgabe_4/lightTODOs/index.html
@@ -4,8 +4,7 @@
 		<meta charset="utf-8" />
 		<title>WebGL Example</title>
 
-		<script id="vertex-shader" type="x-shader/x-vertex">
-			#version 300 es
+		<script id="vertex-shader" type="x-shader/x-vertex">#version 300 es
 
 			in vec4 vPosition;
 			// TODO: Nimm Normalen als Attribut entgegen
@@ -20,6 +19,10 @@
 			// TODO: Nimm alle Koeffizienten und Intensitäten, sowie den Exponenten als Uniform-Variablen entgegen
 			uniform vec3 Ia;
 			uniform vec3 ka;
+			uniform vec3 Id;
+			uniform vec3 kd;
+			uniform vec3 Is;
+			uniform vec3 ks;
 			uniform float specExp;
 
 			// TODO: Definiere alle Konstanten c_1, c_2, c_3
@@ -62,8 +65,7 @@
 				gl_Position = projectionMatrix * position;
 			}
 		</script>
-		<script id="fragment-shader" type="x-shader/x-fragment">
-			#version 300 es
+		<script id="fragment-shader" type="x-shader/x-fragment">#version 300 es
 			precision mediump float;
 
 			in vec3 vfColor;
diff --git a/Abgabe_4/lightTODOs/main.js b/Abgabe_4/lightTODOs/main.js
index 3c58754..62930ea 100644
--- a/Abgabe_4/lightTODOs/main.js
+++ b/Abgabe_4/lightTODOs/main.js
@@ -47,12 +47,12 @@ function main() {
 	normalLoc = gl.getAttribLocation(program, "vNormal");
 	lightPositionLoc = gl.getUniformLocation(program, "lightPosition");
 	IaLoc = gl.getUniformLocation(program, "Ia");
-	IdLoc = gl.getUniformLocation(program, "Id");
-	IsLoc = gl.getUniformLocation(program, "Is");
 	kaLoc = gl.getUniformLocation(program, "ka");
+	IdLoc = gl.getUniformLocation(program, "Id");
 	kdLoc = gl.getUniformLocation(program, "kd");
+	IsLoc = gl.getUniformLocation(program, "Is");
 	ksLoc = gl.getUniformLocation(program, "ks");
-	specularExponentLoc = gl.getUniformLocation(program, "specExp");
+	specularExpLoc = gl.getUniformLocation(program, "specExp");
 
 	eye = vec3.fromValues(0.0, 0.3, 4.0);
 	target = vec3.fromValues(0.0, 0.3, 0.0);
@@ -69,6 +69,11 @@ function main() {
 	gl.uniform3fv(IdLoc, [0.8, 0.8, 0.8]);
 	gl.uniform3fv(IsLoc, [0.7, 0.7, 0.7]);
 
+	gl.uniform3fv(kaLoc, [0.5, 0.5, 0.5]);
+	gl.uniform3fv(kdLoc, [0.5, 0.5, 0.5]);
+	gl.uniform3fv(ksLoc, [0.5, 0.5, 0.5]);
+	
+
 	document.addEventListener("keydown", keydown);
 	document.addEventListener("keyup", keyup);
 	document.addEventListener("mousemove", changeView);