SfC Home > About > Feedback Blog
Feedback Blog by Ron Kurtus. Key words: answers to reader's questions, information, assistance, School for Champions. Copyright © Restrictions
Feedback Blog
Each day readers send in questions and feedback concerning the various lessons in the School for Champions website. A total of 14078 letters have been answered.
List of most recent 10 letters
Title |
Subject |
Country |
| Ether and the MichelsonMorley experiment | Physics | India |
| Why do atoms have a magnetic field? | Physics | India |
| Why doesn't the Sun have an atmosphere? | Astronomy | Uganda |
| Features of an electromagnetic wave | Physics | Nigeria |
| Why can't big bang be a white hole? | Astronomy | USA |
| Heating a bar of iron | Physics | USA |
| What is Huygen's Principle? | Physics | South Africa |
| I want to understand chemistry | Chemistry | Nigeria |
| What is physics? | Physics | Zimbabwe |
| Wants to hire student in TQM or ISO 9000 | ISO 9000 | USA |
Physics
Ether and the MichelsonMorley experiment
May 11, 2013
Question
sir,my question is not about magnetic field it is about ether concept .when the velocity of light is finding out did the ether wind effect the velocity.if not ,
then we can conclude that ether was not their then why michelson -morley experiment done.
rajib - India (23677)
Answer
The idea that space consists of a material called "ether" is appealing and helps to explain how light and magnetic fields travel.
One problem with the ether theory is that the substance would be fixed, such that the Earth would be moving through the ether, at a speed with respect to ether.
In the MichelsonMorley experiment, it was shown that the speed of light was the same in the direction of the motion of the Earth and a direction perpendicular to that motion. Thus the conclusion was that ether did not exist and some other mechanism was in play.
However, they did not take into consideration the motion of the Sun, our galaxy, and other motions that would affect the results.
There never has been a satisfactory explanation of what space is and how forces can act at a distance.
Physics
Why do atoms have a magnetic field?
May 9, 2013
Question
i just wanna ask that why do magnetic field arrises inside the atoms? well when i looked up for it it waz due to the motion of electron around its axis and around the orbital but am confused that if thats the case then from where do they originate ???
well I was guessing if thats due to their sum of all the magnetic fields like canceling and adding up or something that sort of. And why do the magnet have only two poles??
When i read the article it was mentioned that the field is concentrated in the two poles but if the magnetic field is really like the electric field then shoudn't the ends of all the magnets be steep than the other regions and regarding that if we consider it then saying that earth is a big magnet and then saying that its two opposite poles are flat isn't it too contradictory????
well guess so its really a stupid question but thanks for looking up !! and the best thing that i liked about the article was the explanation of attraction and repulsion particularly the diagrams it was really amazing and thanks again !!!
Priyanka - India (23674)
Answer
Electric fields and magnetic fields are interrelated. When a charged particle such as an electron is moving or rotating, it creates a magnetic field.
An electric field has two poles: positive (+) and negative (-). Likewise, a magnetic field has two poles: N and S.
Electrons and protons can be considered tiny magnets, with N and S poles. Likewise, if the particles are aligned--such as in an iron atom--the atom itself can be a tiny magnet.
A magnet consists of magnetized atoms lined up. Thus the field is concentrated at the ends, while the middle of the magnet shows little or no field.
Your questions weren't stupid, since the subject is somewhat tricky to understand.
Astronomy
Why doesn't the Sun have an atmosphere?
May 6, 2013
Question
Why do the sun has no atmosphere?
Kwemoi - Uganda (23669)
Answer
An atmosphere is a layer of gasses surrounding a planet or even star.
The atmosphere of the Earth is made up of air, including oxygen and nitrogen. The Sun also has an atmosphere, but it is made up of extremely hot gases, such as hydrogen and helium.
Physics
Features of an electromagnetic wave
May 4, 2013
Question
mention any three key features of an electromagnetic wave
Ezeh - Nigeria (23666)
Answer
Wavelength, velocity, frequency, amplitude
Astronomy
Why can't big bang be a white hole?
May 3, 2013
Question
why can't big bang be a white hole??
kritika - USA (23665)
Answer
While a Black Hole is an area in space where matter can enter but light and matter cannot escape, a White is just the opposite: Light and matter cannot enter but it can escape.
There are theories that the Big Bang came from a White Hole.
Physics
Heating a bar of iron
May 2, 2013
Question
i have learned about law of conservation of energy and momentum...according to it if we heat a bar of iron, instead of heating a bit by bit till the end wont it get heated first from the other end?(heat creates vibratory motion)
kritika - USA (23662)
Answer
For an explanation, see Heat Transfer and Kinetic Theory of Matter.
Physics
What is Huygen's Principle?
May 2, 2013
Question
Why is the huygens principle an important aspect we are supposed to learn about and how do i get my attention when i feel bored in a physics class?
Lerato - South Africa (23663)
Answer
Huygen's Principle is that any point on a wavefront can appear as a source of waves. The application is if you send a wave through a pinhole, the outgoing wave will appear as if the pinhole was a source of the wave. The wave coming from the pinhole will radiate outward from the hole.
You can see this by sending a straight water wave through a narrow slit.
The best way not to get bored in Physics class is to look for practical applications of some of these theories and principles. Finding applications make it more interesting.
Chemistry
I want to understand chemistry
April 29, 2013
Question
i want to understand chemistry very well
Sunday - Nigeria (23654)
Answer
Our lessons will give a you start at understanding chemistry. They will give the basics, so that you can understand more advanced studies.
Best wishes for success in learning about chemistry.
Physics
What is physics?
April 29, 2013
Question
What is physics?
Comfort - Zimbabwe (23655)
Answer
Physics is a branch of Physical Science concerned with the study of the physical properties of matter. See Succeed in Understanding Physics for more information.
ISO 9000
Wants to hire student in TQM or ISO 9000
April 29, 2013
Question
Hi, I'm looking for a student that wants hands on experience in starting a Total Quality Management program at my company. Internship? Part time? Full time?
Please contact me if you have anyone who would like to learn from someone who has done it, but wants to learn and then lead a TQM or ISO program in manufacturing
Mike - USA (23656)
Answer
The best bet is to check the Business areas in your local colleges. Also, most school have placement services for internships and graduates.
I'll post your letter and let you know if anyone contacts me.
Best wishes in establishing your programs.
Next 10 letters
My Book
What do you think?
Do you have any questions, comments, or opinions on this subject? If so, send an email with your feedback. I will try to get back to you as soon as possible.
Share link
Click on a button to send an email, Facebook message, Tweet, or other message to share the link for this page:
Students and researchers
The Web address of this page is:
www.school-for-champions.com/sfc/feedback_blog.cfm
Please include it as a link on your website or as a reference in your report, document, or thesis.
Where are you now?
School for Champions
About the School for Champions
Feedback Blog