<span>1. Why is photographing lightning a difficult process?
</span>Some reasons which come to my mind for saying this are: 1) You get only one chance for the particular situation - it is not like portrait photography where you can go back in the studio if the photos didn't come out well; 2) lightning varies so much in brightness, intensity and location that guessing the proper exposure requires a lot of experience, as well as luck; 3) you are always at some risk when photographing worthwhile lightning; and 4) lightning is a point (line) source, and demands the most of the optical quality of your camera
<span>
2. What piece of equipment is helpful in capturing lightning photographs?
</span><span><span>SLR camera with B-shutter speed (preferably SLR; you might try using your digital camera, if it has B mode, but this is much more difficult)</span><span>lenses ranging from 28mm to 135mm at minimum. Fixed-focal lenses are preferred over zoomlenses. Aperture ranges should be f/2.8 - f/22.</span><span>sturdy tripod (metal or plastic doesn't make any difference whatsoever at all in safety - if lightning is so close by, you are in trouble anyway)</span><span>cable release, which can be locked</span><span>Slow-speed film: 100 or 200 ISO
</span></span><span>
3. Why is it important to mentally prepare for photographing lightning?
</span><span>When photographing lightning, it’s important to realize that the conditions you are shooting in are unpredictable and dangerous, and there will always be an element of chance and luck involved. So you should prepare yourself.
</span><span>
4. What time of day should you try to photograph lightning?
</span>Nighttime lightning photography is the easiest <span>type
</span><span>
5. Why is composition important in lightning photographs?
It boosts or adds drama to your picture. </span>
Answer:
The answer to this question is given below in the explanation section.
Explanation:
The correct option to this question is:
.clr{color:blue;}
I write the complete code of HTML using this CSS style to execute this scenario as given below
<html>
<head>
<style>
.clr
{
color:blue;
}
</style>
</head>
<body>
<a href="pg.html" class="clr">click here</a>
<h2 class="clr">Home</h2>
</body>
</html>
The bold text is a complete code of this question. When you will run it it will execute a link and Home text on the page in blue color. So the correct option is .clr{color:blue;}
Answer:
0.7
Explanation:
Atenuation is the loss of power of a signal.
Attenuation = output power/input power
= 1.4/2
= 0.7
Answer:
MAC Addresses (Destination and Source MAC address)
Explanation:
A switch has 3 primary functions:
- Forward frames
- Learn addresses
- Avoid loops
An Ethernet frame has the header, data and trailer and there are two specific fields in the header that helps the switch to know where to send data in future transmissions.
- destination MAC address
- source MAC address
every Ethernet frame has this and when the frame hits a switch or any device, any device can look at it ( an Ethernet frame ) and know where it is suppose to go and where it came from.
Every switch has a MAC address table where it stores MAC addresses of different computers on the network.
Example:
When a PC1 sends a frame to PC2 through a switch, the switch looks at the header of the Ethernet frame for the source mac address and adds the source MAC address to its MAC address table and also the port that it came through.
simply put:
A switch looks at the source MAC address to see if it knows it already, if it does. Great! no need to add it again to it's address table.
If it doesn't, it adds it's source address and the port that the frame came from.
This basically how the switch populates its MAC address table.
Answer:
Days of the week including weekends Fill Weekdays – you can autofill working days of the week excluding weekends. This is very cool. I can autofill dates excluding the weekends. Fill Months – and you can use the full word or a standard abbreviation for the month, and Excel will autofill the sequence.
Explanation: