How To Safeguard Your Privacy

Back in the “good ol’ daze” privacy was a very personal thing for most people. Now, in the digital age, privacy has taken on a new meaning: keeping your online property secure is just as important as your physical possessions. And the thieves (hackers) don’t discriminate; in fact, older less tech-savvy people can be easy-picking for those who want to gain access to private information.

A good password has become the first line of defence against digital theft. We can play a big part in protecting our privacy by using a password that is not going to be easy to pick. Good, unique passwords are the key to protecting yourself against being on the receiving end of being hacked.

If you’re playing ostrich when it comes to heeding advice to create more unique and secure codes, you’re not Robinson Whatshisname. The most common passwords, compiled from more than 3.3 million leaked passwords in 2014 from North America and Western Europe, show users are not taking the threat seriously. Some people still use passwords such as; ’123456′, single words such as ‘password’, ‘football’, ‘dragon’, or even their kid’s name, and wonder why they’re being hacked or have their identities stolen.

The bad guys know what passwords to try. You wouldn’t leave your front door unlocked, so why make it easy for people to get into your email, bank, or Wi-Fi

The best passwords, we’re told, use a combination of letters, numbers and capitalisation, and are often best based on phrases or sentences well known to the user. The phrase or sentence, of course, must mean something to you so you can easily remember it. Or, you could use an acronym of your favourite saying, interspersed with numbers and symbols, so it looks like gibberish. Say, for example, an old favourite of yours is ‘roses are red and violets are blue’ and you like number 7. You could set your password as ’7RaR&VaB7′. This is difficult to guess, yet easy to remember.

Listen up fellow-oldies! While you’re at safeguarding your privacy, try using different passwords for each account you have. If that task seems too daunting there are service providers who can help (for a price, of course).

If safeguarding your privacy is an issue for you, just go to http://www.justasktom.com and search ‘privacy’. If you’d like a free copy of anything you find, just let Neil know (neil@neil.com.au) and a digital copy will be with you, pronto.

Micro-Optics: Manufacturing, Testing and Characterization Processes

Micro-optics has opened up a new world of optics for people today. They are not just the basis of modern high-tech microelectronics, but are can successfully produce creative solutions by rightfully combining the traditional optical technologies with its modern counterpart. The manufacturing process of micro-optics includes advanced light use and cutting-edge optical features and functionality. This technology helps to create customized solutions to meet your customer requirements, easily and quickly.

There are companies that produce micro-optic products offering excellent performance and leveraging the state of the art fabrication technologies. These products help to meet specific needs of customers and covers fast and flexible prototyping to large-scale production of diffraction, refractive and hybrid micro-optics. Use of deep UV and long wave infrared is also noted.

One of the most popular manufacturing processes is wafer-based. It is a standard technology used in the semiconductor industry. Experts believe for manufacturing high-quality products, wafer-based microlens technology is most hopeful. It uses processes like resist coating, lithography, reactive ion etching, and more. You can use this technology to produce 10 microns to 2mm diameter as well as aspherical lens with outstanding uniformity and right lateral positions.

One of the main areas of concern for micro-optics part is the correct choice of manufacturing process. In addition, for testing, people must take special care. Due to small size of microlens openings, there is limitation of measurement accuracy by fringes number and sampling accuracy. However, the current scenario doesn’t offer proper testing and characterization. Testing equipment in the semiconductor industry or test equipment from traditional optical manufacturing is not suitable for these kind of products and services.

Wafer-based technology uses standard semiconductor rules and apparatus. Actually, the semiconductor industry is the leader with high amount of investment made in high-tech modern tools and apparatus. One of the prime benefits of manufacturing micro-optics is the use of all equipment that the semiconductor industry uses for its own needs. So it is quite cost-effective. Moreover, since all processes depend on standard technologies of the semiconductor industry, so quality has nothing to do with your budget.

However, one area of concern is the use of instruments for testing microlenses. It is still outdated and not developed for ensuring high quality and accuracy. For example, if you want to test interferometrical of small microlens you have to combine interferometer with a microscope for adequate magnifying of observed fringe patterns. If you want to test large microlenses, you need more advanced, fast equipment which is now unavailable. Since the micro-optics industry is still very new, this lack of adequate instruments is serving as a constraint to manufacturing, testing and characterization.

Research institutions or the manufacturing companies themselves develop most of test instruments that we use in the micro-optics industry these days. Since this industry is not yet popular, manufacturers built instruments in small quantity only. Therefore, the lack of instruments is a burning problem in this field. In the manufacturing phase, process optimization is directly dependent on the ability to measure products quality.

Singh Vikash is an optical expert having years of experience in writing on topics such as optical manufacturing and recently on micro optics manufacturing, testing and characterization. In this article, he discusses about wafer-based micro optics manufacturing process and its drawbacks.

Which Motor Oil Is Right For Your Vehicle?

While motor oil is used in many different kinds of engines, we most often think of using it in our automobiles. Whether you change your oil at a dealership, in specialty business, or in your own garage, you will need to determine what kind is best for your car. It can make a big difference in how long your car’s engine will last.

Types of Oil

Consult your owner’s manual for the recommended viscosity (5W-20, 5W-30, 10W-20, etc.). You may also want to talk to a professional about the best choice for your vehicle, given your driving habits and the typical operating conditions for the area. Next, you’ll have to decide the type of motor oil you would like in your car.

Conventional: This type is used most often by dealerships and service companies. It is also the least costly. Most don’t have many other additives that may benefit your engine. If you are diligent about keeping your oil changed, about every three months or 3,000 miles, this kind should be fine.

Premium Conventional: Most new cars will be serviced with this type. It is available in the most common viscosities that are appropriate for nearly every light-duty vehicle.

Full Synthetic: This type is made for high-tech engines. They are rigorously tested to ensure they have a better, longer-lasting performance, including:

- Protection against engine deposits
- Enhanced flow at low temperatures
- Greatest lubrication at high temperatures

This type is more expensive than conventional, and not all engines need it. Refer to your owner’s guide, and if it doesn’t recommend this type, it may just be an additional cost that doesn’t add that much value to your engine.

Synthetic Blend: As the name suggests, this type is actually a blend of conventional and synthetic. It is designed to give the engine better protection during heavier loads and higher temperatures. It is frequently used in trucks and SUV’s. Even though there is the synthetic component, it does not cost much more than premium conventional types.

High Mileage: Once your vehicle has more than 75,000 miles on the engine, you may want to consider a motor oil designed for that purpose. This type is formulated with seal conditioners that help to keep the internal engine seals flexible.

Oil Additives

Once you’ve chosen among these different types, you will find there are additives that may be included to address specific engine performance conditions.

Detergents: These are designed to prevent high-temperature deposits, rust, and corrosion. They may even help remove some existing deposits.

Anti-Wear Additives: As the motor oil breaks down, it forms a film. These additives help protect the metal surfaces of your engine against that film.

Viscosity Index Improvers: Oil has a tendency to thin as the temperature increases. This additive reduces its ability to do that.

Foam Inhibitors: The crankshaft rotation causes foaming, which doesn’t lubricate as well. This additive disperses the foam.

Friction Modifiers: These additives reduce the friction in the engine, which results in improved gas mileage.

When it comes to motor oil for your vehicle, it’s best to start with the recommendation from your owner manual. Talk to your dealership or other service professionals about your particular driving habits and vehicle history. They can help you choose the product that’s right for your situation, in order to keep your vehicle running smoothly for as long as possible.