| Q1: |
who was the fouder of protons |
Haris iqbal |
16/11/2012 |
| Ans: |
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| Q2: |
HOW MAKE CIRCIT |
BANUKA |
1/7/2012 |
| Ans: |
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| Q3: |
who was the father of rutherford |
azizhayu |
28/5/2012 |
| Ans: |
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| Q4: |
Discovery of proton |
Muhammad |
21/3/2012 |
| Ans: |
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| Q5: |
How can we reduce pressure from dischare tube by the help of vacuum pump? |
mithal laghari |
8/2/2011 |
| Ans: |
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| Q6: |
what is probability? |
waqar hussain khoso |
19/1/2011 |
| Ans: |
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| Q7: |
what are alpha particles? |
rohan |
18/12/2010 |
| Ans: |
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| Q8: |
when light enter rare medium to densir medium bend towards normal.why? |
M ASMAR |
29/9/2010 |
| Ans: |
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| Q9: |
why the cannal rays are ring like in shape? |
manish |
16/9/2010 |
| Ans: |
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| Q10: |
describe the goldstein experiment discovrey of proton |
ramsha |
22/8/2010 |
| Ans: |
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| Q11: |
how proton discovered & its experiment |
ameya jawalgekar |
23/7/2010 |
| Ans: |
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| Q12: |
Q22: the Discovery of protron, neutron & electron |
Tuyisenge Théophile |
24/1/2010 |
| Ans: |
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| Q13: |
why the positive rays are also caled the canal rays |
zanab |
10/12/2009 |
| Ans: |
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| Q14: |
WHEN SLOW MOVING NEUTRONS HIT Cu 66 METAL THEN GAMMA RADIATION ARE EMITTED.THE RADIOACTIVE Cu 66 IS CONVERTED INTO Zn 66 why and how |
ABID NIAZ MALIK |
7/12/2009 |
| Ans: |
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| Q15: |
who is Eugen Goldstein |
Vahnz_06 |
16/11/2009 |
| Ans: |
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| Q16: |
The discovery of proton & electron |
David Olu |
1/10/2009 |
| Ans: |
Discovery of electron is given separately |
| Q17: |
1.give short notes about proton discovery and the discoverer(in simple language). 2.in what ways is the discharge tube used? |
sanjana |
30/4/2009 |
| Ans: |
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| Q18: |
what type of used in discharge tube? |
bala |
30/4/2009 |
| Ans: |
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| Q19: |
1.when did goldstein find proton?what was he doing that time?what was his age that time?who helped him in doing it? |
sanjana |
30/4/2009 |
| Ans: |
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| Q20: |
when was proton found really and who did it? |
chitra |
28/4/2009 |
| Ans: |
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| Q21: |
when did goldstein find proton? |
chitra |
28/4/2009 |
| Ans: |
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| Q22: |
Do protons depend on their source for example on nature of gas? |
farwa |
25/1/2009 |
| Ans: |
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| Q23: |
Why is paypal not listed as a payment option for subscription-time viewing? That is the best option for me. |
Steve Klein |
2/1/2009 |
| Ans: |
You can use PayPal for paying for subscription, please remember to drop us an email on how many hours you have bought, it is recommended that you register on the website, purchase your subscription by choosing to pay by demand draft or paypal and then pay separately by paypal, this way we can track your order |
| Q24: |
Which Gas did Goldstein used in his experiment for the discovery of proton? |
Sajjad Ahmad |
22/11/2008 |
| Ans: |
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| Q25: |
nice.GOD BLESS U |
satishkumar |
12/7/2008 |
| Ans: |
Thanks |
| Q26: |
which characteristic of proton shows that GOLD STEIN have discovered ion not proton? |
munazza mariyam |
20/1/2008 |
| Ans: |
Answered Below |
| Q27: |
which characteristic of proton shows that GOLD STEIN have discovered ion not proton? |
syeda munazza mariyam |
17/1/2008 |
| Ans: |
Goldstein’s ratio of charge to mass of this new particle was found to be differing from gas to gas. This was because he had discovered an ion instead of proton. This varying e/m is the characteristic that proves it. |
| Q28: |
what is the evidence of protons existance |
Vedad |
17/12/2007 |
| Ans: |
The evidence of proton’s existence was provided by observing its tracks in the Wilson’s cloud chamber, it is a chamber which when put into a magnetic field and photographing the resulting trails, the mass, velocity and the charge of the particle can be found. By filling the chamber with nitrogen gas and water vapor and bombarding the mixture with alpha particles (helium) , Blackett produced hydrogen atoms and oxygen isotopes, all the three left different trails in the chamber. This confirmed proton’s existence. |
| Q29: |
Why did scientists assume that a positive particle exixted? |
keith Chow |
12/10/2007 |
| Ans: |
In 1886, Goldstein observed, in an experiment containing perforated cathode, a faint glow behind cathode that meant something was traveling from anode to cathode. He called them canal rays, then Wilhelm Wein, subjected these rays to magnetic field, the rays deflected in direction opposite to cathode rays, he thought that these were positive particles, later JJ Thomsom measured the e/m and found it to be 2000 times that of electron confirming that these indeed were particles. |
| Q30: |
what are the electromagnetic waves? |
vikrant joshi |
12/8/2007 |
| Ans: |
Light, microwaves, x-rays, and TV and radio transmissions are all kinds of electromagnetic waves. They are all the same kind of wavy disturbance that repeats itself over a distance called the wavelength. Electromagnetic (EM) radiation is a self-propagating wave in space with electric and magnetic components. These components oscillate at right angles to each other and to the direction of propagation, and are in phase with each other. |
| Q31: |
who was the first to discover proton, Goldstein or Rutherford? |
BHAGYASHREE SHARMA |
25/5/2007 |
| Ans: |
Rutherford is officially credited with the discovery of proton, Goldstein could not prove the charge to mass ratio, infact he discovered only positive ions while Rutherford discovery pinpointed to proton |
| Q32: |
deflection of anode rays is less than cathod rays in presence of electric or magnetic field with the same strength? |
pratibha bhalekar |
30/4/2007 |
| Ans: |
Cathode rays consist of electrons, which are much lighter than protons and ions (nearly 2000 times), hence deflect more when subjected to the same electric or magnetic field. |
| Q33: |
Information about goldstein.did he discovered proton? |
satpal suppal |
7/4/2007 |
| Ans: |
Eugene Goldstein (1850 –1930) was a German physicist involved in the research in X-rays. In 1886, he discovered, using perforated cathode, rays travelling from the anode toward the cathode. He named them as canal rays. He believed that he had discovered the proton. But his ratio of charge to mass of this new particle was found to be differ from gas to gas. This was because he had discovered an ion instead of proton. Later Rutherford discovered proton and is attributed for its discovery. |
| Q34: |
the Discovery of protron, neutron & electron |
Hassan Zubaidi |
5/1/2007 |
| Ans: |
Discovery of neutron is going to be uploaded in a week's time; it is a completely new format and will contain for the first time a voice over |
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