"Ombak tujuh," which translates to "seven waves" in English, is a traditional concept found in Indonesian culture, particularly associated with the island of Bali. It typically refers to a specific natural phenomenon where a series of seven waves occur in succession. In Balinese culture, these waves are often linked to various aspects of spirituality and rituals. For example, they may play a role in ceremonial practices or signify important moments in life.

Ski wax is a specialized substance applied to the base of skis and snowboards to enhance their performance on snow. It reduces friction between the snow and the ski or snowboard, allowing for smoother gliding and improved speed. Ski wax can also provide better control and stability during turns. There are different types of ski wax, categorized primarily into two groups: 1. **Glide Wax**: Used to optimize the glide of skis and snowboards on snow.

A Stokes wave refers to a type of wave solution to the equations governing surface gravity waves, particularly applicable to the behavior of water waves. Named after the British scientist George Gabriel Stokes, who derived these wave solutions in the 19th century, Stokes waves describe periodic waves on a fluid surface, taking into account nonlinearity and dispersion effects.

A storm surge is a rise in sea level that occurs during a storm, primarily due to the combination of strong winds and low atmospheric pressure. This phenomenon can lead to coastal flooding and is most commonly associated with hurricanes and tropical storms. When a storm approaches land, the powerful winds push water toward the shore, causing the water level to increase dramatically. Additionally, the low barometric pressure associated with many storms allows the sea surface to rise further.

The Ursell number is a dimensionless quantity used in fluid mechanics and statistical mechanics, particularly in the context of many-particle systems. It arises in the study of phase transitions and the statistical properties of fluids. Mathematically, the Ursell number \( U \) for a system is defined using the correlation functions of the particles in the system. It is often used to quantify the degree of correlations in a system of interacting particles.

Wave-making resistance refers to a type of hydrodynamic resistance that occurs when a vessel moves through water, creating waves as it displaces water. This phenomenon is especially significant for ships and boats, as the energy required to generate these waves contributes to the overall resistance that the vessel experiences as it moves.

Waves and shallow water refer to specific concepts in oceanography and hydrodynamics. ### Waves Waves are disturbances that transfer energy through a medium, usually water in the context of oceans and seas. They can be classified based on various factors, including their generation, characteristics, and the medium in which they travel. Key points about waves include: - **Types of Waves**: There are several types of waves, including wind-generated waves, seismic waves, and tidal waves.

A raincoat is a waterproof or water-resistant outer garment designed to protect the wearer from rain and wet weather. Typically made from materials like rubber, plastic, or specially treated fabrics, raincoats often feature closures like zippers or buttons, hoods for additional protection, and sometimes vents to improve breathability. They come in various styles, lengths, and colors, catering to both functional and fashion needs.

Waterproof fabric is a type of textile that is designed to be impervious to water, preventing it from soaking through. This characteristic is achieved through various methods, which can include: 1. **Material Choice**: Some fabrics, like rubber, vinyl, or synthetic fibers like polyester and nylon, have inherent water-resistant properties. 2. **Coatings**: Many fabrics are treated with coatings or laminates that repel water.

Fatty acids are carboxylic acids with long hydrocarbon chains, which can vary in length and degree of saturation. They are essential components of lipids (fats and oils) and play crucial roles in biological processes. ### Key Features of Fatty Acids: 1. **Structure**: - **Carboxyl Group**: Each fatty acid has a carboxyl (-COOH) group at one end, which gives it acidic properties.

Wax sculptures are three-dimensional artworks created using wax, a versatile material that can be molded and shaped easily. These sculptures can depict a wide range of subjects, including human figures, animals, and abstract forms. Wax has been used in various art forms throughout history, and it is often associated with lifelike representations due to its ability to capture fine details and textures.

Bayberry wax is a natural wax derived from the berries of the bayberry shrub (Myrica pensylvanica and Myrica cerifera), which are native to North America. The wax is extracted from the fruit through a process of boiling and then filtering. Bayberry wax has a distinctive greenish hue and is known for its pleasant, earthy scent.

Beeswax is a natural wax produced by honeybees (Apis mellifera) from their glands. The bees secrete the wax in thin scales and then chew and mold it into the honeycomb structure, which serves as a storage medium for honey, pollen, and larvae. Beeswax is composed mainly of long-chain fatty acids and esters, and it has a complex mixture of different compounds.

Carnauba wax is a natural wax obtained from the leaves of the carnauba palm (*Copernicia prunifera*), which is native to Brazil. It is often referred to as the "queen of waxes" because it is one of the hardest natural waxes and has a high melting point (around 82 to 86 degrees Celsius or 180 to 187 degrees Fahrenheit).

Cetyl palmitate is a waxy substance derived from the esterification of cetyl alcohol and palmitic acid. It is commonly used in cosmetics and personal care products as an emollient, thickening agent, and skin-conditioning agent. Its properties help to create a smooth texture in formulations, improve the spreadability of products, and enhance the moisturizing effects on the skin.

Cire Trudon is a French company renowned for its luxury candles and home fragrances. Founded in 1643, it is one of the oldest candle manufacturers in the world. The company has a rich history and has been associated with the French royal court, producing candles for Louis XIV and other notable figures throughout history. Cire Trudon candles are known for their high-quality ingredients, which often include a blend of natural waxes and fragrances sourced from around the globe.

The weather of 2020 was notable for several significant events and trends across the globe: 1. **Record Temperatures**: Many regions experienced extreme heat. July 2020 saw some of the highest temperatures in recorded history in parts of North America, Europe, and Asia. 2. **Wildfires**: The summer of 2020 was marked by widespread wildfires, particularly in Australia and the western United States. The U.S.

Grafting wax is a specialized material used in horticulture and agriculture to protect grafted plants. It is typically a blend of natural and synthetic substances that helps seal the cut surfaces of a graft, preventing moisture loss, protecting against pests and diseases, and creating an environment conducive to healing and growth. Here are some key points about grafting wax: 1. **Composition**: Grafting wax can be made from various materials, including beeswax, paraffin, and other waxes or resins.

Hair wax is a styling product used to shape and hold hair in place. It typically comes in a solid or semi-solid form and is made from a combination of natural and synthetic ingredients, including waxes (like beeswax or carnauba wax), oils, and other polymers. Hair wax provides a strong hold with a flexible finish, allowing for re-styling without needing to wash it out. It’s particularly effective for creating textured looks, defining layers, and adding volume.

Hydrogenated jojoba oil is a processed form of jojoba oil, which itself is derived from the seeds of the jojoba plant (Simmondsia chinensis). Jojoba oil is liquid wax and is known for its moisturizing properties and similarity to human sebum, making it popular in cosmetics and skincare products. The hydrogenation process involves adding hydrogen to the oil, resulting in a more stable and solidified product.