What disproved the Bohr model? Five years later, the model would be disproved by Hans Geiger and Ernest Marsden, who conducted a series of experiments using alpha particles and gold foil – aka. the “gold foil experiment.” In this experiment, Geiger and Marsden measured the scattering pattern of the alpha particles with a fluorescent screen. […]
Which factors determine whether a fluid flow is laminar or turbulent?
Which factors determine whether a fluid flow is laminar or turbulent? Laminar flow occurs at lower velocities, below a threshold at which the flow becomes turbulent. The velocity is determined by a dimensionless parameter characterizing the flow called the Reynolds number, which also depends on the viscosity and density of the fluid and dimensions of […]
What is the number 211?
What is the number 211? 211 is a free, confidential referral and information helpline and website that connects people of all ages and from all communities to the essential health and human services they need, 24 hours a day, seven days a week. 211 can be accessed by phone or computer. Who do you call […]
What is the diameter of the impression?
What is the diameter of the impression? The diameter of the impression is the average of two readings at right angles and the use of a Brinell hardness number table can simplify the determination of the Brinell hardness. How can a microscope help us study living things? A microscope allows scientists to view detailed relationships […]
How can we catch all kind of exceptions in a single catch block?
How do you calculate helium balloon lift?
Do resistors have voltage ratings?
Do resistors have voltage ratings? The power rating and voltage rating of a resistor are one common source of confusion. This far exceeds the power rating of the part. Conversely, for high resistance values, the amount of electrical energy that the 0603 resistor can withstand is determined by the working voltage rating of 75 volts. […]
Which type of industry is mining?
Which type of industry is mining? The extracted materials are transformed into a mineralized form that serves an economic benefit to the prospector or miner. Typical activities in the mining industry include metals production, metals investing, and metals trading. What is a mining business? The U.S. mining industry consists of the search for, extraction, beneficiation, […]
How many syllables are in beautiful?
How many syllables are in beautiful? 3 syllables What is the most famous haiku? Matsuo Basho (1644-1694) made about 1000 haiku poems through the lifetime, traveling around Japan. His writing “The Narrow Road to the Deep North ” is the most famous haiku collection in Japan. What is a good haiku? Basically, a Haiku is […]
What is plant machinery and equipment?
What is plant machinery and equipment? The term ‘plant’ refers to machinery, equipment and apparatus used for an industrial activity. Very broadly, ‘tools’ might be considered to be instruments that are used by hand, whereas ‘equipment’ might refer to a set of tools used for a single purpose. What precautions should you take around machinery? […]