What is the formula of antenna length? Basic calculation is the speed of light divided by the frequency. Say of an airband antenna to receive 125 MHz then it is 300/125 = 2.4 meters full wave length. Commonly, but not exclusively, antennas are either a ½ wave dipole hence 1.2 meters or a ¼ wave…
Category: Other
Why the motor is not changing the direction?
Why the motor is not changing the direction? For a Shunt, Series or Universal DC motor changing the polarity terminals at the supply will not change the direction of the motor. The field will reverse along with the armature current, hence torque will keep acting in the same direction. What happens if you wire a…
What does an armillary sphere do?
What does an armillary sphere do? The Armillary Sphere An armillary sphere is basically a skeletal celestial sphere with a model of the Earth or, later, of the Sun placed in the center. It is useful as a teaching tool and as an analog computer for solving various astronomical problems to a crude degree of…
How many days do you need for iddah?
How many days do you need for iddah? For women who were widowed during the recent massacre in Christchurch, this injunction applies and it will, therefore, be required for them to observe the ‘iddah’ (waiting period) for 130 days. The exception is if the widowed woman is pregnant, then her waiting period (iddah) ends when…
Can you get married in the desert?
Can you get married in the desert? The desert’s incredible scenery and off-the-grid feel, making deserts an ideal location for private and intimate weddings as well as elopements. Oh, and cacti make for some pretty unique wedding decor—and you won’t have to worry about rain on your wedding day! Can you have a destination wedding…
What is E-CRM system?
What is E-CRM system? Electronic customer relationship management (E-CRM) is the application of Internet-based technologies such as emails, websites, chat rooms, forums and other channels to achieve CRM objectives. It is a well-structured and coordinated process of CRM that automates the processes in marketing, sales and customer service. What is the role of E-CRM? The…
Can cancer look like fibroadenoma on ultrasound?
Can cancer look like fibroadenoma on ultrasound? While it is difficult to distinguish between the different benign fibroepithelial lesions on imaging, it can also be challenging to distinguish between fibroadenomas and malignant masses. Ultrasound features of BRCA-associated breast cancers can resemble a benign mass, such as a fibroadenoma. What does fibroadenoma look like on an…
Can I put a dimmer on a light with 2 switches?
Can I put a dimmer on a light with 2 switches? With a standard single-pole dimmer, a single switch controls the light. With a three-way dimmer, you can control a light with two switches. You will need a three-way dimmer and a three-way switch. This lets you dim from one location and turn the lights…
What is the oldest monotheistic religion?
What is the oldest monotheistic religion? Judaism is traditionally considered one of the oldest monotheistic religions in the world, although it is believed that the earliest Israelites (pre-7th century BCE) were polytheistic, who evolved into henotheistic and later monolatristic, rather than monotheistic. What does Henotheist mean? Henotheism (Greek “one god”) is a term coined by…
Are there any oil fields in Oklahoma?
Are there any oil fields in Oklahoma? The Oklahoma City Oil Field is one of the world’s giant petroleum fields and is located in Oklahoma City, Oklahoma in the United States of America. The field was opened just south of the city limits on December 4, 1928, and first entered Oklahoma City limits on May…