Galenus created first temperature standard in 170 AD using ice and boiling water. First sealed thermometer built by Ferdinand II in 1654. Fahrenheit developed mercury thermometer and scale in early 18th century
Custom firmware for BLE thermometers on Telink chipset. Supports Bluetooth 5.0+ with LE Long Range up to 1 km. Includes three LCD displays and measurement recording capabilities. Supports encrypted connections using PIN-code and bindkey beacon
Uses thermal expansion of liquid mercury to indicate temperature. Contains mercury reservoir connected to capillary bore. Temperature scale visible through stem, lower near bulb. Covers temperature range from −37 to 356 °C
Keep food at or below 40°F for optimal freshness. Place thermometer at eye level in front of refrigerator. Use both built-in and freestanding thermometers
Temperature is the speed of atoms and molecules in a material. Higher temperature means faster particle velocity. Temperature affects pressure, air density, and other physical quantities
Microscopes are used to observe tiny objects, with light and electron types. Test tubes hold and mix liquids, available in various sizes. Volumetric flasks measure exact volumes of liquids at precise temperatures. Bunsen burners sterilize objects and heat substances