![]() Gravity Lab includes a short 4-page guide explaining the Newton's law of universal gravitation, the first two of the three Kepler's laws of planetary motion and the concept of gravity assist in spaceflight. Gravity lab is a perfect aid for anyone seeking a deeper understanding of physics, or just willing to play around with their own simulated universe. Should you, however, spend a day as a heavenly body, your perception would be completely changed. For us, standing here on Earth, gravitational forces always point down. By being gravitationally attracted to a rock weighing more than 13,000,000,000,000,000,000,000,000 lbs (or almost 6,000,000,000,000,000,000,000 metric tons), we are not very good at intuitively understanding the universal effects of the gravitational forces. Gravity Lab is a great tool to explore the laws of nature that govern everything in the universe. ![]() You can toggle a switch to show the acceleration vectors of the bodies, which are proportional to the forces between the bodies and inversely proportional to their masses. According to Newton's law of universal gravitation, every massive body in the universe influences every other massive body, and it works exactly the same in Gravity Lab. The positions and velocities of all the particles are recalculated in real time. It allows you to create dozens of particles with different masses and different initial velocities by simply tapping the screen or drawing a velocity vector. Gravity Lab is a gravity simulator for iPad. In US units, these measurements are usually in grams per liter.** Now with 3D display of warped space ** Many test results in the Système Internationale are expressed as the number of moles per liter. Mole: also “gram molecular weight,” a quantity based on the atomic weight of the substance. Mean Corpuscular Volume is expressed in cubic micrometers Used in this table: µkat (microkatals), nkat (nanokatals) per liter Katal (kat): a unit of catalytic activity, used especially in the chemistry of enzymes. Used in this table: pg (picograms), g (grams), mg (milligrams), etc. Blood pressure can be too low (hypotension) or too high (hypertension). ![]() Bottom number is diastolic pressure when heart is at rest. Top number is systolic pressure, when heart is pumping. Normal: 120/70 to 120/80 millimeters of mercury (mmHg). units, divide the SI value by the conversion factor.ĭISCUSS OUT OF RANGE RESULTS WITH YOUR HEALTHCARE PROVIDER Laboratory Test to SI Units, is the factor to multiply U.S. with the Système International d’Unités (SI units), a metric system used in many parts of the world. The table below compares the units used in the U.S. Where normal values for people assigned female at birth (AFAB) and people assigned male at birth (AMAB) are different, they are indicated as F and M. Your test results can be affected by several factors, including your age or biological sex, if you are pregnant, the time of day when the sample was taken, active infections, stage of HIV disease, and food (some test samples need to be taken after you have fasted for several hours). Results that are out of range may not represent a problem. ![]() Compare your results to the range shown on your lab report. These values depend on the equipment or method used.
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