This lab presentation by Group 4 explores the nature of neutrinos, including their types (electron, muon, and tau) and unique properties such as being electrically neutral and fast-traveling through matter. It discusses significant experiments, particularly a 2011 study where neutrinos appeared to travel faster than light between Switzerland and Italy. The presentation concludes by addressing the origins of neutrinos and poses a theoretical question about time travel.

1. Physics Lab Presentation
Presents

2. Group 4
• Karim Hesham Khashaba
• Hossam
• Tarek Soliman
• Muhammed Ahmed
• Ahmed Ammar

3. Today we will talk about

4. Agenda
• What is Neutrino ?
• What are the types of neutrino ?
• What is the difference between neutrino and
it’s relatives ?
• What makes neutrino fast ?
• How Fast can neutrino Travel ?
• Where we can find neutrinos ?

5. What is Neutrino ?
• A neutrino is a sub atom particle with no electric
charge,
• Neutrinos are known for their ability to propagate
over considerable distances through solid matter
almost unaffected.
• Neutrinos were originally thought to have no mass .
Today they are believed to have mass, but it is
exceedingly small, only a tiny fraction of the mass of
a proton .

6. What are the types of Neutrino ?
There are 3 types :
• Electron
• Moun
• Tau

7. What is the difference between Neutrino
and it’s relatives ?
• The main difference between the neutrinos
and their relatives is the fact that neutrinos
are electrically neutral, while the Electron,
Muon, and Tau are electrically charged.

8. What makes neutrino fast ?
• Neutrinos are electrically neutral, they are not
affected by the electromagnetic forces which
act on electrons.
• Neutrinos are affected only by a "weak" sub-
atomic force of much shorter range than
electromagnetism, and therefore it is able to
pass through great distances in matter
without being affected by it.

9. How Fast can Neutrino Travel ?

10. Before September 2011

11. In the early 1980s, first measurements of
neutrino speed were done using pulsed pion
beams.
The pions decayed producing neutrinos, and the
neutrino interactions observed within a time
window in a detector at a distance were
consistent with the speed of light.

12. After September 2011

13. 0.0024 Seconds
• Time taken by Neutrinos to travel from
Geneva, Switzerland to Gran sasso, Italy
• Distance: 723 Km
• Is ……

14. Do you know what does that mean ?!

15. Pause

16. Back in September 2011
• in a research project called OPERA.
• The scientists sent a beam of neutrinos from
CERN, to Gran Sasso Laboratory in central Italy.
• 732 kilometers
• they found the extraordinary result that …….

17. The Neutrinos appeared
to travel faster than the
speed of light.

20. This experiment proved that the
Neutrino particle is faster than
light.

21. Play

22. If all the previous were proven
100% sure that will mean

25. Where we can get Neutrinos ?
• The Sun

26. Now
The final Question

27. if all of this were
confirmed, can we
travel back in time
?!

28. Waiting for your feedback
Karimkhashaba92@gmail.com
http://www.facebook.com/Karim.Khashaba
@KarimHKhashaba

29. Presented to you by
Ahmed Ammar
Tarek Soliman
Muhammed Ahmed
Hossam
Karim Hesham Khashaba.

30. Thank you.