Apparently not. The Wikipedia article on Rishons sums it up quite nicely: "Currently, there is no scientific evidence for the existence of substructure within quarks and leptons, but there is no profound reason why such a substructure may not be revealed at shorter distances." In summary, the rison model proposes that leptons (such as electrons) and quarks (which make up protons and neutrons) are made up of smaller particles; such particles have not been discovered yet; but they might still be discovered.
It was proposed independently by Haim Harari and by Michael A. Shupe.
It would be impossible to say.Clay has been around since long before anyone had a name.
It was discovered in the 1930s but I don't think anyone knows how long it was around before then.
It was believed that there were Martians on Mars, however, they have not been discovered when space probes landed on the planet. It is most likely that there is no one on Mars. Actually, it is up to one's beliefs, whether one thinks there is anyone on Mars or not.
No. Nobody had discovered NZ when it errupted, but the skies in China went pink for a month after it happened it was so big
Rishon composite is a type of fiberglass.
Makor Rishon was created in 1997.
Rishon LeZion was created in 1882.
The population of Rishon LeZion is 228,200.
Hapoel Rishon LeZion F.C. was created in 1940.
Maccabi Rishon LeZion F.C. ended in 1953.
Hapoel Rishon LeZion - handball - was created in 1968.
Rishon Va-Acharon is the First and the Last -- the most Holy God.
Rishon LeZion HaRishonim Railway Station was created in 2003.
Rishon LeZion Moshe Dayan Railway Station was created in 2011.
city
rishon (ראשון)