Wheel hardness ranges between 74A-100A. Softer wheels (78A-82A) are suitable for beginners. They grip surfaces better, absorbing any bumbs, but are also slower and wear out more rapidly. Harder wheels (82A or more) are suitable for more advanced skaters. They are faster and last longer, but they absorb less vibration, making them more difficult to handle.
Roller skates follow the same sizing system as US, UK or EU shoes. For EU sizes, it is recommended to choose a half to a whole number greater than the size of your feet. The skate should fit the foot well, without pushing on it. Some children's skates allow you to adjust the size by a few numbers.
Recirculation mode is used if your building does not allow air to be discharged into a chimney, i.e. typically in residential flats, prefabs and the like. In this mode, carbon filters are used to clean the air and remove odours. The cleaned air is then returned back into the room. Recirculation is slightly noisier than extraction.
USB cables and connectors are our constant companions, but the sheer variety and number of options can get confusing. Let's take a closer look at the most common USB types and see what the latest newcomer USB-C brings into the fray.
Expressed in hertz (Hz). Represents the number of frames per second that the screen can show. A larger value provides a smoother picture, which is especially important for sports, action movies and games. We recommend a refresh frequency of at least 100 Hz.
Hardware memory designed to speed up the process of accessing data from the main memory. The larger the value, the greater the speed. A normal value is 2 MB
The fan located in the rear wall of the oven circulates hot air and ensures faster heating. The hot air heating is enabled thanks to the turbine built around the fan. In this owen, food is cooked on several levels at once. Convection oven saves energy.
Energy class of an appliance determines the amount of energy consumed by the electric appliance used within the European Union. Energy classes are defined by the EU and individual members of countries incorporate them into their legislation. From September 21, 2021, a new energy class ranging from A to G is applicable.
The energy consumption of light fittings. The consumption of modern energy-efficient lights are measured in watts.
Bases are the part of lamp bulbs allowing the mechanical fixing and electrical connection with the light source. Based on the type of attachment, there are screw, bayonet, and bi-pin bases, all of which are available in various sizes. Different base types are not compatible with each other.
Recommended TV viewing distance is an important, yet often overlooked parameter when choosing a new TV. Optimum diagonal size ensures that you will enjoy full visual immersion and perfect details when watching your Ultra HD TV. Check out our chart to choose the right TV size for your room and budget.
Camera sensors (Chips) record image information and send it to the processor. Camera-sensor technology is divided into two types: CMOS and CCD.
Energy consumption is indicated by a rating system measured by Energy efficiency. Every refrigerator carries a obligatory label clearly indicating its energy efficiency rating, with illustrated energy consumption obtained from ideal operating conditions with an ambient temperature of 20°C, and 70% storage space usage.
Memory cards are the medium on which images and videos are stored. Cards can be chosen by type, capacity, writing speed and brand.
