How sharp are you at spotting the difference? Try these tricky photos and see how well you do

A higher level of education is associated with better mental functioning in old age. Experts think that advanced education may help keep memory strong by getting a person into the habit of being mentally active. Challenging your brain with mental exercise is believed to activate processes that help maintain individual brain cells and stimulate communication among them. Many people have jobs that keep them mentally active. Pursuing a hobby, learning a new skill, volunteering or mentoring are additional ways to keep your mind sharp.

Most of the fleeting memory problems that we experience with age reflect normal changes in the structure and function of the brain. These changes can slow certain cognitive processes, making it a bit harder to learn new things quickly or screen out distractions that can interfere with memory and learning. Granted, these changes can be frustrating and may seem far from benign when we need to learn new skills or juggle myriad responsibilities. Thanks to decades of research, there are various strategies we can use to protect and sharpen our minds. Here are seven you might try.

How sharp are you

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Myths about aging can contribute to a failing memory. Middle-aged and older learners do worse on memory tasks when they're exposed to negative stereotypes about aging and memory, and better when the messages are positive about memory preservation into old age. People who believe that they are not in control of their memory function are less likely to work at maintaining or improving their memory skills and therefore are more likely to experience cognitive decline. If you believe you can improve and you translate that belief into practice, you have a better chance of keeping your mind sharp.

Although there are no guarantees when it comes to preventing memory loss or dementia, some activities might help. Consider seven simple ways to sharpen your memory. And know when to get help for memory loss.

When we age, our brain shrinks. Blood flow within it slows. The brain loses volume, causing a loss of some nerve cell connection. Memory lapses will occur with greater frequency. These lapses are a symptom of growing older, not necessarily a sign of dementia. One way to slow these symptoms is to take care of your body and your mind. Here are five ways to help keep your mind sharp as you age:

Research has shown that there are many ways you can hone your mental sharpness and help your brain stay healthy, no matter what age you are. Doing certain brain exercises to help boost your memory, concentration, and focus can make daily tasks quicker and easier to do, and keep your brain sharp as you get older.

In general, you will want your lawnmower blade sharpened to about a 30-degree angle. The blades should be sharp enough to cut the grass without tearing or ripping it, but not so fine that the edge is razor-thin and easily damaged by the terrain or small debris in your lawn. You want your blade to be butter knife sharp, not razor sharp.

Your lawn mower blades do need proper care and maintenance to keep their edge honed and ready to cut your grass. There are differing opinions on how sharp you need to keep your blade. Mainly, this comes down to a balance between getting that good cut every time and the lengths you want to go to care for your grass.

Can your blades be too sharp? Well, this depends on your type of grass, how well you are at avoiding obstacles with your mower, and the time and energy you have to invest in resharpening your blades.

Lawn enthusiasts have their own preferences for their mower blades. But, home and garden experts agree that for most people, the blades in your mower should be about as sharp as a butter knife, and an angle of about 30 degrees. You should be able to touch the edge without getting cut.

If your blades are super sharp, they will have a very fine edge that is more susceptible to rolling (a folding over of the blade edge). They will also be at increased risk for other types of damage. Your blades will dull faster and thus require sharpening more often.

This is especially true for those who do not have perfectly flat lawns or who may have more pebbles, weeds, tree roots, or otherwise woodsier terrain. Blades that are too sharp for this type of terrain will get damaged regularly and will need to be sharpened or even replaced if the damage is too extensive. Sharper is not always better!

For most homeowners, sharpening once a year is usually enough to keep blades serviceable. This is best done at the beginning of the season as the elements can dull the edge as it sits in storage. If you have a considerable-sized yard or hit a lot of debris, your blade may require some maintenance halfway through the season as well.

Aside from inspecting the blade, you should also look at the cut your mower is providing. If the grass edge looks torn instead of cleanly cut, you need to sharpen your blades. Grass that has uneven, torn edges has an increased risk of disease. This can damage your lawn, giving you dead or discolored patches that can be costly to repair or replace.

The thickness and type of metal will also affect the regularity with which you need to sharpen the blade. Thicker, more durable metals will be more resilient and require less frequent maintenance. Whereas thinner or less durable metals will require more work to keep them in consummate grass cutting condition.

However, if that sounds like too much time and money to invest in your little push mower and a weekend chore, you can always take your lawnmower to a shop. Most shops that sell lawnmowers also have the equipment to sharpen their blades.

You can also benefit from their expertise on how to best repair the blade, they know how to sharpen it correctly, how to balance it, and how to check for other damage. They will also know whether the blade can be repaired or whether it should be replaced. The whole process should only take a trained staff member about 20 minutes to complete.

Recent bought a chef's knive and a paring knife, both are high carbon stainless steel. The chef's knife is quite sharp and can cut a piece of butcher's twine just by touching it, with little or no pressure. The paring knife cannot. In fact, I can even grip the blade quite hard and it doesn't cut me. Should I have it sharpened?

All cutting (slicing, chopping) knives should be as sharp as you can get them, really. A dull knife is much more likely to cause an accident and cut you. Dull knives are more difficult to use properly and any knife used improperly is likely to lead to accidents. The duller the knife the more pressure you need to apply in order to cut your food, leading to a higher chance of slipping and hurting yourself

It needs to be sharp enough to cut easily and cleanly. A sharp knife grips the food, cuts better, and is easier to control. Food also has a nicer presentation with a clean cut. A sharp knife is safer because it is easier to control. It does not need to be razor sharp and cut hair. Cut paper is plenty sharp for meat, fruits, and vegetables.

A knife does not hold an edge very long. A honing steel will re-align the microscopic teeth and can be used frequently- even after each use. You will get one with most knife sets. I hone before each use. You will feel when the knife does not bite. Something like a cucumber will bite easily. A tomato takes a sharp edge. When it does not easily penetrate the skin then hone.

I laughed out loud when I read the question and some of the answers. I am notorious, at least in my family, for not sharpening my knives regularly (or very fully even when I do). Every time my brother visits me, he complains about my knives and sharpens them, and as as result I invariably cut myself while I'm washing dishes or actually paring. As a result of this result, he is now barred from my kitchen.

I think you should have a paring knife with a cutting blade you're comfortable with. If you're comfortable with a sharp one, use it. If you like them a bit dull and know how to maneuver them properly, do that.

Be a people person! Talking with others actually sharpens your brain, whether at work, at home, or out in your community. Studies show social activities improve your mind. So volunteer, sign up for a class, or call a friend!

How did your knives hold up to these sharpness tests? Thebeauty of these sharpness tests is they are free, require little to nopreparation, and easy. You can now always answer the question of whether yourknife is sharp!

I just want to learn how to sharper my knives? Simple the knife sharper I have dosent seems to do the job so how do I sharpen knives simple to we can cut the turkey how do I sharpen all my knives for thanksgiving

Nutrition is also critical. What keeps our body healthy is also what keeps our mind sharp. A brain-healthy diet is very similar to a heart-healthy diet. For example, research shows that trans fats not only affect your heart, but they can also permeate brain cells, altering their ability to communicate. Over time, this can lead to problems such as cognitive impairment and depression.

The following activity is another way to help keep you relaxed yet sharp, by (1) banishing the tightness and rigidity that may be overtaking you, and (2) clearing away your mental focus on your uncomfortable state, allowing you to get back to your message and listeners.

In photography, the term "tack sharp" describes an image which shows the main subject in sharp focus, with clean lines, crisp details, and no blurring. Achieving this level of sharpness is one of the keys to a truly eye-catching picture.

Taking tack sharp photos is all about reducing camera shake to an absolute minimum. There are many different ways you can do this. Some apply to all situations, while others can only be used in certain circumstances, but each one helps reduce the amount of camera shake by a small fraction. The more methods you can use, the sharper your shots will be.

When focusing, most cameras will try to keep as much of the scene acceptably sharp as possible. This is fine when you want to see detail everywhere, but it does mean that no one object will be super sharp. 2ff7e9595c