INPUT ARTICLE: Article: CardDAV is an address book communication standard that Google recommends using to sync Apple contacts. Enter google.com in the Server field. If you have 2 Step verification enabled (meaning you require a special code that is sent to your phone to log in), you will need to generate and enter an application specific password. The switch next to the Contacts option should be green. Syncing will automatically begin.

SUMMARY: Open the Settings app on your device. Select Mail, Contacts, Calendars. Select Add Account Select Other. Select Add CardDAV Account. Enter your Gmail account information. Press Next at the top of the screen. Ensure that Contacts is switched on. Open the Contacts app on your device.

INPUT ARTICLE: Article: If your cat is constipated, you may notice her repeatedly enter the litter box, squat to defecate, but fail to pass any feces. Your cat may strain and vocalize (meow, cry, yowl) during these attempts. Other symptoms can include low energy, loss of appetite, throwing-up foam or undigested food, and abdominal pain. Sometimes, you can even feel a large hard lump of feces if you gently push on your cat's abdomen. Signs of constipation can look similar to signs of a urinary blockage, which is an emergency that can quickly become life threatening. If you suspect your cat has been straining to urinate, or if you have not seen any urine in the litter box in more than 12 hours, take your cat to the vet to rule out a urinary obstruction. Tumors and foreign objects like hair, bones, and plant material can obstruct the passage of feces. Sometimes diet can play a role in constipation. If your cat has a history of constipation, you might add canned food for extra moisture or enrich the cat's diet with psyllium. Metabolic or endocrine disorders like dehydration, electrolyte imbalances, or obesity may also cause constipation. Neurological problems from spinal cord disease, pelvic injuries, or primary nerve dysfunction can cause constipation in some cats. Megacolon may develop when feces is impacted in colon and colon no longer pushes contents along. You can try an enema at home if your cat is mildly constipated (less than 2 to 3 days) or when constipation is not chronically observed. If the case is more severe or you think your cat may have a more complicated disorder, seek veterinary care. Your cat may have a more complicated disorder if you notice changes in water intake, very low energy level, severe vomiting, or a complete loss of appetite. Sometimes, a constipated cat might be slightly less hungry from feeling full or from the discomfort of being constipated, but may still be willing to eat. Attempt an enema at home only if your cat is docile and gentle. She shouldn't have other underlying painful or medical conditions like fractures, arthritis, and kidney problems. One potential advantage of giving an enema at home is that your cat is in a more familiar place and may be calmer. You may want to have a second person present to help gently restrain your cat. Your cat may still be uncooperative and might scratch or bite you. Don't excessively restrain your cat if she is fighting back.

SUMMARY: Watch for signs of constipation. Try to identify the cause of constipation. Consider administering an enema at home only in cases of mild, occasional constipation. Take your cat's temperament into account.

INPUT ARTICLE: Article: Many pool players already know this simple mathematical lesson, since it comes up every time you carom the cue ball off a rail. This law tells you that the angle at which the ball strikes the rail is equal to the angle the ball bounces off at. In other words, if the ball approaches the rail at a 30 angle, it will bounce off at a 30 angle as well. The law of reflection originally refers to the behavior of light. It's usually written "the angle of incidence is equal to the angle of reflection." In this scenario, the goal is to carom the cue ball off the rail, and have it return to strike the object ball. Now set up a basic geometry problem as possible: Imagine a line from the cue ball to the rail, intersecting at right angles. Now imagine the cue ball traveling to the rail. This path is the hypotenuse of a right triangle, formed by your first line and a section of the rail. Now picture the cue ball bouncing off and hitting the object ball. Mentally draw a second right triangle pointing the opposite direction. In this case, we can use the "Angle Angle Side" rule. If both triangles have two equal angles and one equal side (in the same configuration), the two triangles are congruent. (In other words, they are the same shape and size). We can prove that these triangles meet these conditions: The law of reflection tells us that the two angles between the hypotenuses and the rail are equal. Both are right triangles, so they each have two 90 angles. Since the two balls started equidistant from the rail, we know the two sides between the ball and the rail are equal. Since the two triangles are congruent, the two sides that lie along the rail are also equal to each other. This means the point where the cue ball strikes the rail is equidistant from the two starting positions of the ball. Aim for this midpoint whenever the two balls are an equal distant from the rail. Let's say the cue ball is twice as far from the rail as the object ball. You can still picture two right triangles formed by the cue ball's ideal path, and use intuitive geometry to guide your aim: The two triangles still share the same angles, but not the same lengths. This makes them similar triangles: same shape, different sizes. Since the cue ball is twice as far from the rail, the first triangle is twice as large as the second triangle. This means the first triangle's "rail side" is twice as long as the second triangle's "rail side." Aim for a point on the rail of the way to the object ball, since is twice as long as .

SUMMARY:
Understand the law of reflection. Set up the cue ball and object ball equidistant from the rail. Prove the two triangles are congruent. Aim at the midpoint of the rail section. Use similar triangles if the balls are not equidistant from the rail.