INPUT ARTICLE: Article: It is a common mistake to try to clean white Keds using bleach, but bleach can actually cause canvas to turn yellow. These stains may be permanent, but there are a few techniques you can try before giving up. Mix half a cup of cream of tartar with a quart of hot water. Soak your Keds in this overnight. You can also try making a paste out of baking soda and water. Apply this paste to the canvas, and leave it overnight. Clean as usual the next day. Applying hydrogen peroxide directly to the stains may also help. If it doesn't work at first, try a few more applications. Salt stains may appear on your shoes during winter if the streets and sidewalks are salted. To remove salt stains, mix one part vinegar with two parts water. Using a paper towel or white cloth, blot the stain with the mixture. Take another clean cloth dampened with just water, and dab the vinegar away. Let them dry completely before wearing. Mold and mildew can form if your Keds became wet and dried improperly. To get rid of mold and mildew, mix equal parts water and rubbing alcohol. Use a rag or cotton towel to apply this solution to the mildew and gently scrub it away. Rinse the shoes afterwards. Mix a mild laundry detergent with about one tablespoon of bleach. Use a white cloth or toothbrush to apply this mixture to the non-canvas parts of the shoe, such as the sole and the white border around the bottom of the shoe. Scrub to remove dirt. Do not apply any solution with bleach in it to the canvas, as it may cause the canvas to stain yellow.

SUMMARY: Apply homemade solutions for yellow stains. Mix vinegar and water to remove salt stains. Use rubbing alcohol to get rid of mildew. Scrub the soles to get rid of dirt and grass stains.

In one sentence, describe what the following article is about: When your cat scratches the couch, it also secretes oils and scent markings through glands in its paws. Since your cat scratches in part to mark its territory, it will return to the couch to renew that scent. Enzymatic pet-odor removers can help eliminate the scent. You can buy these sprays online, or at a pet supply store. Don't waste your money on deodorizers that only mask the scent but won't eliminate the enzymes that cause the scent only your cat can smell. Materials such as double-sided tape, aluminum foil, and sandpaper will make scratching your couch difficult or uncomfortable for your cat. If you place them where your cat normally scratches, your cat will avoid those spots. It might take anywhere from several weeks to several months before your cat stops trying to scratch your couch. Leave these items on the couch as long as possible, then remove them slowly, an item at a time. If you find the items unsightly and want to remove them when you have guests over, make sure you replace them as soon as possible, or your cat may try to scratch the couch again. Like undesirable items, unpleasant smells will cause your cat to avoid the area surrounding the couch. This may prevent inappropriate scratching. Fortunately, many of these smells, such as menthol and citrus, are not unpleasant to people. A cotton ball soaked in perfume or cologne might also work as a deterrent. Remember that cats' noses are more sensitive than yours you don't need an overwhelming amount to deter your cat. If you're using an unpleasant smell as a deterrent, don't place your cat's scratching post too close to the couch. If the scratching post has the same unpleasant smell, your cat won't use it either, thus defeating the purpose. Physical punishment doesn't work with cats, because your cat won't associate what you're doing with the act of scratching the couch. Although it may help relieve some of your frustration, your cat will get angry with you and may not trust you. Over time, this can do serious damage to your relationship with your pet. Even if your cat does associate the physical punishment with scratching the couch, it will simply wait until you're not around to scratch the couch. This continues the behavior while avoiding the negative consequence.
Summary: Spray your couch with an enzymatic cleaner to remove your cat's scent. Place undesirable items on the couch to prevent scratching. Surround your couch with smells that are unpleasant to cats. Refrain from physically punishing your cat.

The formula for the frequency of a wave in a vacuum is almost identical to that of a wave not in a vacuum. Since there are no outside influences on the velocity of the wave, though, you would use the mathematical constant for the speed of light, which electromagnetic waves would travel at under these conditions. As such, the formula is written as: f = C / In this formula, f represents frequency, C represents the velocity or speed of light, and represents the wavelength of the wave. Example: A particular wave of electromagnetic radiation has a wavelength of 573 nm when passing through a vacuum. What is the frequency of this electromagnetic wave? When the problem gives you the wavelength in meters, no further action is needed. If, however, the wavelength is given in micrometers, you need to convert this value into meters by dividing it by the number of micrometers in a single meter. Note that when working with extremely small numbers or extremely large numbers, it is generally easier to write the values in scientific notation. The values will be shown in and out of their scientific notation forms for this example, but when writing your answer for homework, other schoolwork, or other formal forums, you should stick with scientific notation. Example: = 573 nm 573 nm x (1 m / 10^9 nm) = 5.73 x 10^-7 m = 0.000000573 The speed of light is a constant, so even if the problem does not provide you with a value, the value remains 3.00 x 10^8 m/s. Divide this value by the wavelength converted into meters. Example: f = C / = 3.00 x 10^8 / 5.73 x 10^-7 = 5.24 x 10^14 With this, you should have calculated the value of the frequency of the wave. Write your answer in Hertz, Hz, the unit for frequency. Example: The frequency of this wave is 5.24 x 10^14 Hz.
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One-sentence summary -- Learn the formula. Convert the wavelength into meters, if necessary. Divide the speed of light by the wavelength. Write your answer.

INPUT ARTICLE: Article: This method assumes you already have a WordPress site that you can edit, as well as an AdSense account. You must do so in a separate tab on your browser. In AdSense, click "My Ads" at the top-left of the page. To do it, click "New ad unit," and design your ad in the dialog box that appears. " Do it as soon as you are finished editing your ad. Copy the code for the ad in the dialog box that appears. To add it, on your WordPress dashboard, navigate to the post or page editor for the post or page you wish to add the AdSense ad to. In the "Text" editor, paste the code among the HTML for the post where you want your ad displayed. Make sure you are looking at the "Text" editor, and not the "Visual" editor. It will say in the upper-right corner of the editor box. After you paste the code, in the upper-right, click "Save Draft," and then click "Preview" to make sure your ad displays as you want it to. When you're happy with how it displays, you may publish or update your post or page by clicking "Publish" or "Update," whichever button appears, depending on whether it's a new post or not.

SUMMARY:
Log into your WordPress dashboard. Log into your AdSense account. Build your ad in AdSense. Click "Save and get code. Add the code. Review your ad. Publish or update your post.