I know how to find out MAC address while being connected to internet. But is there any way to know the MAC address without being connected to internet or LAN, I mean while being offline?
a lot of thanks for the reply.
That's a very good point .
Actually I'm designing a patch antenna for my project. An array of patches would make my antenna size many times larger. I don't want to sacrifice miniaturization for the sake of directivity. Perhaps you are an expert in RF field. can...
Antenna theory is quite new to me and I found in constantine Balanis's book that there's a relationship between maximum directivity and effective area of an antenna-if we increase effective area, directivity will also increase. The picture of antenna author used to derive the equation was a horn...
We know to make antenna dimension reasonably small, we modulate baseband signal with a high frequency carrier. Antenna size as far as I know is in the order of one tenth of carrier signal wavelength. For example, for a 3 GHz carrier signal, receiver antanna size is 1 cm.
But, in frequency...
I found in many sources describing microstrip antennas are 'low profile'. Well, I know several antenna parameters like radiation pattern, antenna gain, intensity, directivity etc. But what is this 'low profile'?? Can anyone tell me what sort of property of an antenna does the term 'low profile'...
How does it become valid to add a dB with dBm? I found in a book that the author did like the following:
60dBm - 155 dB = - 95 dBm
Isn't it necessary to convert 155 dB into dBm or vice versa and then doing the algebra?
The book is wireless communication by Theodre Rappaport.
No it does not mean like that. The minus sign indicates that the induced voltage in the loop tends to oppose any change of magnetic flux in the loop. For memory aid you can make humor of this fact thinking induced emf as an ungrateful fellow who after being created wants to oppose its creator-...
Modern physics never says anything before big bang. Physics only discusses the aftermath of big bang.So the question of outside region of the tiny point is meaningless. We can't point anywhere in space and say here big bang happened. It is considered that big bang happened everywhere. And the...
Scientists never solely rely on mathematics when they study nature. If they only rely on math to study nature, string theory would have been a law of nature already. Scientists rely both on math and observations. Math+ experiments = natural sciences. If you exclude experiments from the...
Hi FeDeX_LaTeX,
After reading your response I was obliged to check your profile to get some idea about your mathematical education. I came to know that you don't like math but like physics very much and you are doing GCSE.
Well, from some of your threads I saw you are talking about Riemann...
Your statement is surprising. Have you not studied dynamics where you can find velocity, acceleration, force and so on as vectors?
It's not an arithmetic multiplication. It's a vector multiplication. In this case we call it dot product. And the integration is a closed surface integral not a...
Well, by this example you are trying to say that on the right hand side we have added two non-similar quantities like you did in your previous example p=m+v.
But the quantity u and at are similar in nature. at is nothing but a velocity same as u. so the expression v= u+ at does hold the rule of...
That's a violation of the rule of vector algebra. velocity v is a vector quantity and mass m is a scalar. How do you add them?
But p= mv which is a scalar multiplication of vector v. That's allowed in vector algebra.
The use of multiplication is more convenient with the vectors.
And some...