1Mohammed Alqahtani -cs525 - spring 2010

Dimensions concept since 1800s. Some people assumed that 4D is the

time . Scientists, Psychologists, Philosophers

as well as Spiritualists also take interest in the fourth Dimension.

Mathematicians and Physicists use the 4th dimension in daily calculations to illsuratw some of the universe.

2Mohammed Alqahtani -cs525 - spring

2010

Some believe it is time.

Scientists “ Mathematicians “ believe it is a direction different from all direction in the real life.

3Mohammed Alqahtani -cs525 - spring 2010

object = only one of the fundamental units.

i.e. a line only has length.

4Mohammed Alqahtani -cs525 - spring 2010

X

Object = two of the fundamental units.

i.e. a square has a length and a width.

X

Y

5Mohammed Alqahtani -cs525 - spring 2010

3D object = three fundamental units.

i.e. a cube has a length, width and height.

6Mohammed Alqahtani -cs525 - spring 2010

4D object = four fundamental units..

i.e. a hypercube has a length, width, height and a fourth dimension that is perpendicular to all three of the other units.

7

Mohammed Alqahtani -cs525 - spring 2010

Our universe is 3D , our eyes actually only see in 2D. Our retina has only a 2D surface area with which it can detect light coming into our eye.

So the picture we see is not 3D, but a 2D projection of the 3D universe we are looking at.

8Mohammed Alqahtani -cs525 - spring

2010

Our eyes can’t see the 4D picture except by using some technologies ,help human eyes see the 4D , but the picture we’ll see then is 3D being project of the 4D objects .

9Mohammed Alqahtani -cs525 - spring

2010

4D visualization has a wide variety of useful applications. Mostly , they aims to see the inner 3D objects which is inside the 4D.

4D cinema or movie isn't really 4D ,it’s combination of 3-D film with physical effects synchronized with film in the theatre , i.e. 4D Avatar.

10Mohammed Alqahtani -cs525 - spring

2010

4D ultrasound is a medical ultrasound technique, 4D ultrasound is a medical ultrasound technique, used in medical filed , providing 3D images of the used in medical filed , providing 3D images of the fetus .fetus .

Send wavesSend waves

Receive returned echoes Receive returned echoes

Program recognize the frequencies echoes by use Program recognize the frequencies echoes by use the mathematic theory of 4D to create the 3D the mathematic theory of 4D to create the 3D image , it can be live by keep sending courteously.image , it can be live by keep sending courteously.

11Mohammed Alqahtani -cs525 - spring

2010

12Mohammed Alqahtani -cs525 - spring

2010

•Radiotherapy : aimed to use cancer’s treatment to treat or help to Radiotherapy : aimed to use cancer’s treatment to treat or help to discovre.discovre.

•Most common cancer types . Based ob on the tumor type, location, and Most common cancer types . Based ob on the tumor type, location, and stage , health conditions of the patient.stage , health conditions of the patient.

•The process : 4D imaging The process : 4D imaging treatment planning treatment planning treatment delivery treatment delivery

13Mohammed Alqahtani -cs525 - spring

2010

14Mohammed Alqahtani -cs525 - spring

2010