This sturdy, easy-to-use meter allows students to measure the intensity of sunlight in foot-candles (the term for units of light intensity, or illuminance) by aiming the photocells mounted on the top of the unit towards the light source. A scale on the meter provides a readout from 0 to 10. This versatile meter may also be used to test moisture, fertility, and alkalinity content in soil. No batteries are required - solar powered! Includeds a detailed insert on how to properly utilize the product.
The soil’s pH level will effect how well plants utilize the total nutrients available in the soil. These nutrients are the building blocks the plant requires for successful growth. Successful growth cannot be acheived with inadequate or improper light intensity. And even if these three key growing conditions are ideal, a garden will not thrive if over or under watered. Pick up one of these testers today to increase the fertility of your garden, and well as your growth success rate!
This adapter-powered butterfly uses Flexinor wires to create a realistic visual effect!
Start a great hobby in electronics with this state of the art electronics project lab!
This illuminated orbiter is great for demonstrations in the astronomy classroom!
Use this cool Sea Monkeys zooquarium to teach your child how to take care of a pet!
This is a deluxe soldering station that can handle any kind of application!
Get swept away by this fantastic robot kit that uses vibrations to move!