public void FixedFiftyFiftyTest()
{
Vector3D detectorAngle = VectorFactory.Create(0);
Vector3D particleAngle = VectorFactory.Create(90);
var detector = new Detector(detectorAngle);
int count = 0;
for (int i = 0; i < iterationCount; ++i)
{
var particle = new Particle(VectorFactory.Create());
// Force the particle direction.
particle.ExposeToField(particleAngle);
if (detector.InDirectionOfDetector(particle))
{
++count;
}
}
int expected = (int)(iterationCount * 0.50);
Assert.AreEqual(expected, count, margin);
}
// @see EPR paradox.
public void JohnBellTest()
{
int count = 0;
var random = new Random(Guid.NewGuid().GetHashCode());
for (int i = 0; i < iterationCount; ++i)
{
var particle1 = new Particle(VectorFactory.Create());
var particle2 = new Particle(particle1);
var detector1 = new Detector(VectorFactory.Create(random.Next(3) * 120));
var detector2 = new Detector(VectorFactory.Create(random.Next(3) * 120));
bool up1 = detector1.InDirectionOfDetector(particle1);
bool up2 = detector2.InDirectionOfDetector(particle2);
if (up1 != up2)
{
++count;
}
}
int expected = (int)(iterationCount * 0.50);
Assert.AreEqual(expected, count, margin);
}
public void FortyFiveDegreesTest()
{
var detector1 = new Detector(VectorFactory.Create(0));
var detector2 = new Detector(VectorFactory.Create(45));
int count = 0;
for (int i = 0; i < iterationCount; ++i)
{
var particle1 = new Particle(VectorFactory.Create());
var particle2 = new Particle(particle1);
bool up1 = detector1.InDirectionOfDetector(particle1);
bool up2 = detector2.InDirectionOfDetector(particle2);
if (up1 != up2)
{
++count;
}
}
int expected = (int)(iterationCount * 0.85);
Assert.AreEqual(expected, count, margin);
}
static void Main(string[] args)
{
/*
* Note: If both detectors have the same angle
* the spin of the entangled particles
* will be opposite 100% of the time.
*
* If the detectors are opposite the spin
* will be equal 100% of the time.
*
* But, and this the point;
* if the difference between the detectors
* is 45 degrees (PI/4), the spin
* will be opposite 85% of the time.
* (not 75 as classical physics predicts)
*/
var d1 = new Detector(new Vector3D(1, 0, 0));
var d2 = new Detector(new Vector3D(0, 1, 0));
int diffs = 0;
for (int i = 0; i < 10000; ++i)
{
var p1 = new Particle(VectorFactory.Create());
var p2 = new Particle(p1);
bool up1 = false, up2 = false;
bool async = true;
if (async)
{
Parallel.Invoke(
() => Detect(d1, p1, out up1),
() => Detect(d2, p2, out up2)
);
}
else
{
Detect(d1, p1, out up1);
Detect(d2, p2, out up2);
}
Console.WriteLine(up1);
Console.WriteLine(up2);
if (up1 != up2)
{
++diffs;
}
Console.WriteLine();
}
Console.WriteLine(diffs);
Console.ReadKey();
}
public void OppositeDirectionTest()
{
Vector3D angle = VectorFactory.Create(0);
var detector = new Detector(angle);
for (int i = 0; i < 1000; ++i)
{
var particle1 = new Particle(VectorFactory.Create());
var particle2 = new Particle(particle1);
bool up1 = detector.InDirectionOfDetector(particle1);
bool up2 = detector.InDirectionOfDetector(particle2);
Assert.AreNotEqual(up1, up2);
}
}
public void RandomFiftyFiftyTest()
{
Vector3D angle = VectorFactory.Create(0);
var detector = new Detector(angle);
int count = 0;
for (int i = 0; i < iterationCount; ++i)
{
var particle = new Particle(VectorFactory.Create());
if (detector.InDirectionOfDetector(particle))
{
++count;
}
}
int expected = (int)(iterationCount * 0.50);
Assert.AreEqual(count, expected, margin);
}
public void SixtyDegreesTest()
{
Vector3D detectorAngle = VectorFactory.Create(60);
var detector = new Detector(detectorAngle);
int count = 0;
for (int i = 0; i < iterationCount; ++i)
{
Vector3D particleAngle = VectorFactory.Create(180);
var particle = new Particle(particleAngle);
bool up = detector.InDirectionOfDetector(particle);
if (up)
{
++count;
}
}
int expected = (int)(iterationCount * 0.75);
Assert.AreEqual(expected, count, margin);
}