Is a teleconverter the same as an extension tube? Quick contrast. Teleconverters act as a magnifying glass vs. an extension tube pushes the lens element closer to the subject. Teleconverters can focus to infinity, an extension tube reduces the maximum focal distance. Do extension tubes reduce light? Because extension tubes do not have optics, they […]
What is facial erythema?
What is facial erythema? Facial erythema (facial redness), a clinical finding most noticeable in fair-skinned individuals, occurs as a result of cutaneous blood vessel dilation and increased blood flow to the skin. How do you treat erythema on the face? The pulsed-dye laser and, more recently, other nonablative laser and light therapies have been used […]
What is phaco cataract?
What is phaco cataract? Phacoemulsification, or phaco. Your doctor inserts a tiny probe into the eye. This device emits ultrasound waves that soften and break up the lens so that it can be removed by suction. Most cataract surgery today is done by phacoemulsification, also called “small incision cataract surgery.” How did sushruta treat cataract? […]
What can I use instead of a hair crimper?
What causes pulsus paradoxus?
What causes pulsus paradoxus? Pulsus paradoxus can be thought of as a direct result of competition (ie, enhanced chamber interaction) between the right and left sides of the heart for limited space; for the right heart to fill more, the left heart must fill less. What is pulsus paradoxus a sign of? Review article: Pulsus […]
Why does my cat dig in my drawers?
Why does my cat dig in my drawers? Stealing Objects. We all know a cat that steals seemingly random household items like socks or stuffed animals. When your cat burglarizes your dresser drawer, it likely means he wants your attention, wants to play or “wants what he can’t have.” Why does my cat steal things […]
What are the disadvantages of genetically modified organism?
What are the disadvantages of genetically modified organism? What Are the Disadvantages of GMOs? It can be dangerous to other insects that are important to our ecosystem. It sparks concerns on changing the field of agriculture. It can damage the environment. It causes unwanted residual effects. It can create more weeds. It threatens crop diversity. […]
How do I curb jealousy?
How do I curb jealousy? Here’s a look at some ways to cope with jealousy and examine what’s at the root of your feelings. Trace it back to its source. Voice your concerns. Talk to a trusted friend. Put a different spin on jealousy. Consider the full picture. Practice gratitude for what you have. Practice […]
How do you format a field to currency in access query?
What is adenovirus based vaccine?
What is adenovirus based vaccine? An adenovirus vaccine is a virus that has been altered so that it can’t make you sick, it can’t replicate, it cannot integrate into your DNA, so they take out some really important parts of that virus genome. Which vaccines are vector based? Some vaccines recently used for Ebola outbreaks […]